A ringing controller realizing remote power down and power up of a remote metering station includes a ringing signal detection circuit, a pulse counter, and a power supply control circuit. Ringing signals are connected with the ringing signal detection circuit. The ringing signal detection circuit is connected with the pulse counter. The pulse counter is connected with the power supply control circuit. The power supply control circuit is respectively connected with a voltage output end V0 and a voltage input end VI. The ringing signal detection circuit is used for detecting whether the ringing signals are input. The pulse counter is used for counting the ringing signals. The power supply control circuit is used for controlling the on-off of the voltage according to results of the pulse counter. The ringing controller uses ringing control signals in voice conversations to control the on-off of a power supply circuit of the remote metering station, thereby realizing a remote power down/power up control function of the remote metering station system and realizing a remote reset function of devices of the remote metering station.