Automatic test device of circuit board

The utility model discloses an automatic test device of a circuit board. The automatic test device of the circuit board comprises a power conversion module, a test unit, a signal interaction unit and an output display unit, wherein on/off of the power conversion module is controlled by a control switch; the power conversion module is used for respectively accessing electric energy into the test unit and a tested circuit board to drive the power conversion module to work; the test unit comprises a microcontroller and a test circuit board; the microcontroller is used for generating a test signal for executing each performance detection; the test circuit board is used for accessing the generated test signal into the tested circuit board via the signal interaction unit; and a feedback signal correspondingly formed by the tested circuit board is transferred to the test unit via the signal interaction unit. Therefore, the test result is judged and obtained; and the output display unit is used for displaying the obtained test result. General tests of various circuit boards can be achieved by the automatic test device of the circuit board; and the automatic test device of the circuit board has the characteristics of being high in security, compact in structure, convenient to operate and the like.