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In project management, a project manager should carry out the “four confirmations.” As a project manager, it is essential to accomplish and execute these “four confirmations” in the management of project tasks. The four confirmations are: confirmation of construction drawing review; confirmation of construction plan review; confirmation of material samples and material price review; confirmation of project cost (budget and settlement) review. Construction drawings serve not only as the basis for the construction of a project but also as a basis for management. The design quality of these drawings has a significant impact on the construction quality, project schedule, and project cost, and it also plays a crucial role in the overall quality of project management. The review of construction drawings can be approached from the following aspects. Adjust the excavation functionality. Generally, the intended use of a construction project is determined before its construction begins, or during the feasibility study phase and the design stage of the construction plans. In the early stages of a construction project, decisions are often made by the management, with little input from professionals. When it comes to the review of the construction drawings, attention is often not paid to the functional aspects outlined in them. This requires the project manager to take initiative in identifying and addressing these functional shortcomings, in order to make up for any deficiencies in the project design. Place great emphasis on professional coordination and alignment. In project management practice, we have found that the integration between different specialties is often overlooked in engineering design; therefore, this aspect needs to be given due attention during the drawing review process. Such as whether the vertical shafts and passages for mechanical and electrical pipelines have been reserved in the building structure; whether the locations for maintenance access to these mechanical and electrical systems have been prepared during the decoration phase, and whether there will be any overlaps in the space occupied by these pipelines. Leaving reserved space for maintenance after the project is completed is usually a weak point in engineering design. During the project management of a large-scale temple construction project, the author found that the clear width of the maintenance shaft next to the restroom in the auxiliary rooms was less than 400 millimeters; as a result, it became impossible to carry out pipeline maintenance work after the project was completed. In the end, no choice remained but to create another access opening in the already installed wall tiles. The review and approval of the construction organization plan is an essential and important step. The construction organization and design plan is the \"guideline for on-site construction\" for the construction company responsible for a particular project, and it represents an important document throughout the construction process. Only when the construction contractor prepares a reasonable construction organization plan and provides effective on-site management can the successful completion of the entire project be ensured. The review and approval of the construction organization plan can be carried out from 3 aspects. Review the construction organization framework. The organizational structure includes the management network of the organization and the qualifications and experience of personnel in various positions; it also encompasses elements such as the quality assurance system and the management system for safe and civilized construction. Reviewing the construction organization structure involves assessing the personnel within the quality management system; that is, evaluating the qualifications of individuals in various positions. Special care should be taken when assessing the qualifications of engineering and technical staff, while the professional experience and qualifications of other project managers also need to be verified. Review the project schedule. Common issues in the project schedule, such as the lack of a labor balance plan and the failure to include in the schedule the deadlines for tasks that require the client’s cooperation, should be corrected promptly. Review the construction plan. The construction plan is an important means to ensure the construction quality of engineering projects, and it is also a key methodological element among the factors involved in project quality management. Important aspects of the construction plan, such as waterproofing, sound insulation, structure, mechanical and electrical systems, and environmental protection, must be carefully reviewed; new materials, new techniques, and new methods require even more thorough examination. The review and confirmation of construction materials must be carried out with great care. Engineering building materials constitute the core of construction projects and represent a major component of project costs; likewise, the quality of these materials is also a very important factor in the quality of construction work. The project manager must handle this with great care and must not take it lightly at all. The project manager can focus on a few key elements: the cost-performance ratio of the materials. By applying value engineering management theory, and while ensuring the functional performance, safety, and aesthetic appearance of the materials, inexpensive materials are used as much as possible in order to reduce project costs and enhance the direct benefits of the project. The environmental friendliness of building materials. When selecting building materials, their environmental impact must be taken into account; materials that violate **environmental regulations must not be used under any circumstances. Have a basic understanding of the market conditions in the building materials sector to ensure reasonable settlement prices for the materials. Conduct thorough market research, particularly focusing on material prices. While finalizing the samples of building materials, determine their prices as well, and identify the supply channels and source information for these materials. Review and confirmation of project costs. The review and confirmation of project costs includes both the project budget and the final settlement. When reviewing a budget, it is necessary to consider both advantages and disadvantages: check whether the application of standard cost items is reasonable; verify whether the quantity of work has been calculated accurately; ensure that the unit price for labor hours is determined in accordance with the requirements of the contract and tender documents; confirm that the unit prices for materials and equipment are based on the prices agreed upon by both parties or on relevant cost information; check whether the calculation of indirect costs follows the relevant cost guidelines; and ensure that there are no errors in the entire calculation process and its results. Review of settlements should be carried out in accordance with the budget review method. During the settlement review, it is also necessary to take into account the actual progress of the project, and adjust the settlement amount in accordance with the contract; it is important to check whether the on-site economic negotiation procedures are complete, so as to determine whether settlement can proceed ； Opinions on the quality assessment upon on-site inspection: whether the specified quality standards or targets set out in the contract have been met, and whether adjustments to the payment amount are necessary based on the quality results; whether the consumption of materials and equipment provided by Party A falls within the limits specified in the contract, with any adjustments to the payment amount made accordingly based on the actual material consumption; and whether there are any other expenses that arise during the construction process.