Automatic metal tester

The utility model relates to an automatic metal tester, which comprises a frame, a conveying mechanism for conveying samples to be tested, a test probe and an electrical control device. The conveying mechanism and the test probe are supported on the frame, the test probe is a gantry probe including a gantry and a group of opposite transmitting and receiving coils which are oppositely respectively mounted in a group of opposite edges of the gantry, a conveyor belt penetrates through the gantry in arrangement, an MCU control chip is arranged inside the electrical control device, and signal transmission of transmitting coils, signal receiving processing of receiving coils and running of the conveying mechanism are controlled and processed by the MCU control chip. Therefore, the automatic metal tester realizes automatic data acquisition, and increases accuracy of testing data of specific metal materials in foods and drugs.