The embodiment of the utility model discloses signal transfer board. This signal transfer board includes: base plate (1) and electric current / temperature analog signal circuit (2) of setting on base plate (1) and PWM drive signal circuit (3), the input of electric current / temperature analog signal circuit (2) is used for connecting the power module, and the output is used for connection director's input, the input of PWM drive signal circuit (3) is used for connection director's output, and the output is used for connecting the input of power module, electric current / temperature analog signal circuit (2) include: an output for connecting anti -jamming circuit (21) of power module and be used for connection director difference operational circuit (22), anti -jamming circuit (21) is connected to the input of difference operational circuit (22). adopt the embodiment of the utility model provides a, electric current analog signal and temperature analog signal's output capability can be improved, signal interference is reduced.