Test tool capable of automatically switching and testing adjustable potentiometer

The utility model discloses a testing tool capable of automatically switching and testing adjustable potentiometers, which comprises a base, a main control board, a bearing platform and a bottom board, the base and the bottom board are clamped to form a testing shell, the main control board is arranged above the base, the bearing platform is arranged above the main control board, and the bearing platform is arranged above the main control board. First through holes allowing the multiple thimbles to penetrate out are formed in the bearing table and the bottom plate, the thimbles are electrically communicated with the main control board, an LED indicator lamp fixing frame, a test change-over switch inserting hole and a pedal switch are arranged on the bottom plate, and the junction box circuit board is in point connection with the main control board through the thimbles. A circuit board switching circuit of the junction box is communicated with jacks of the test change-over switch through pins to realize test o