Anti-freezing and dehumidifying electronic water meter

The invention belongs to the field of instruments and meters, and particularly relates to an anti-freezing and dehumidifying electronic water meter which is characterized in that a base meter comprises a coded disc, a pipe fitting and a valve, an air supply system is composed of a mechanical power supply end and an upper output end, the valve and the mechanical power supply end on the lower portion of the air supply system are located in the pipe fitting, and a reversible coded disc cover is arranged on the left side, right facing the upper portion of the coded disc, of an upper shell; a group of temperature and humidity sensors are arranged in the code disc cover, a transparent plastic window is arranged on the right side of the upper shell, a circuit board is arranged below the transparent plastic window, a hole-shaped fixing plate is fixed below the circuit board, and an Internet of Things antenna is arranged at the top end of the upper shell. The upper output end of the air supply system is arranged in th