The invention discloses a single-phase cost-control intelligent electric meter. The electric meter comprises a shell, a display screen, buttons, a slot, pin connection ports and a fingerprint acquisition device. The display screen is located on the upper portion of the shell, an indicator light is further arranged in the center of the upper portion of the display screen, the pin connection ports are located in the lower portion of the shell, the fingerprint acquisition device is connected with an internal fingerprint recognition module, and the buttons include ten number buttons, a confirmation button, a cancel button and four direction buttons. An internal structure of the electric meter comprises a single-chip microcomputer, a metering unit, a storage unit, a power supply unit, an alarm unit, the display screen, a carrier communication unit, a relay control unit, a 485 communication unit, a clock unit, a button input unit, a safety certification unit and an electricity stealing prevention unit. The intelligent electric meter has the advantages of being diversified in function, high in intelligence degree and the like.