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An intelligent electricity meter is a type of electricity meter that possesses functions such as electricity measurement, information processing, network communication, real-time monitoring, automatic control, and information exchange. Smart electricity meters and their networks integrate metering, digital signal processing, communication, computing, and microelectronics technologies. Smart electricity meters and their systems not only provide comprehensive services to various types of users, but also offer powerful anti-theft functionalities. These functions include: 1. Automatic collection of electricity usage information, which encompasses bidirectional active energy, reactive energy in all four quadrants, total active power, power factor, phase-specific active power, phase-specific voltage and current, harmonic information, transformer losses, etc. 2. Automatically records events such as loss of voltage, loss of current, phase failure, power outage, reverse voltage phase sequence, meter reset, switching on/off, opening of the meter cover, opening of the button box cover, and programming. 3. Control user load. 4. Comprehensive, accurate, and fast data statistics. By utilizing smart electricity meters as the core for collecting and analyzing user information, it is possible to gather data from smart electricity meters, concentrators, data collection terminals, as well as multi-functional user service terminals located in thousands of households. This data is then processed in depth and managed scientifically, which will **help to advance efforts to combat electricity theft by enhancing the relevance, accuracy, and timeliness of such efforts. 1. It enables the analysis and statistics of electricity consumption and losses for each circuit, each feeder line, and even for individual buildings and units. This allows for the assessment of line losses on a per-circuit basis, enabling the identification of circuits and areas with high losses, so that these can be targeted for thorough inspection. 2. Record events such as loss of voltage, loss of current, phase failure, power outage, reverse voltage phase sequence, meter reset, switching on/off, opening of the meter cover, opening of the button box cover, and programming for electricity customers, and issue alerts in a timely manner. 3. Breakthroughs have been achieved in securing evidence of electricity theft; it is possible to accurately determine the methods used by users to steal electricity. This provides law enforcement and inspection agencies with detailed data on users’ electricity consumption before and after such thefts, serving as a basis for tracking down the stolen electricity and handling subsequent matters. 4. The equipment operates reliably and stably, without any errors or omissions in judgments. 5. Fast ； It quickly identifies the time when electricity theft occurs, enabling anti-theft personnel to arrive promptly to catch the thieves and reduce economic losses. 6. Alarm ； By utilizing the power system information collection system, it is possible to promptly report data on electricity theft and issue alerts when such theft occurs. An electricity consumption monitoring system centered around smart electricity meters can provide electricity theft prevention personnel with functions such as real-time monitoring of customers’ electricity usage, statistical analysis, evidence collection, and rapid alarm generation. It also enables analysis of electricity consumption and loss for each circuit, each sub-area, as well as each building and unit, thus allowing for the assessment of losses on a per-circuit and per-sub-area basis. This helps to identify key areas that require further inspection, improving the effectiveness, accuracy, and timeliness of electricity theft prevention efforts. The research, development of smart meters not only ensures the electrical safety of current residents and prevents electricity theft, but also serves as a good guide for the development of related technologies in the future.