The invention relates to an anti-freezing float type water level gauge. The anti-freezing float type water level gauge comprises a water level encoder, a water level wheel, a suspension cable, a float and a pressure wheel and also comprises a micro submersible pump; the water level wheel is coaxially connected with the water level encoder; the suspension cable is suspended in a V-shaped groove of the water level wheel; the micro submersible pump and the float are connected with two ends of the suspension cable respectively. According to the anti-freezing float type water level gauge, the measurement is accurate and the measurement work can still be performed in icy waters in winter; the structure is simple and the installation is easy; the high temperature of water of the lower middle portion in a logging well is pumped to the upper portion through the micro submersible pump and accordingly the upper and lower circulation of a water body in the logging well is achieved and accordingly the formation conditions for interfering the freezing are achieved and the water body in the logging well does not freeze.