Cold and hot impact testing machine

The utility model relates to the field of part testing equipment, in particular to a cold and hot impact testing machine which comprises a main machine and a testing head. The main machine comprises an air source assembly and a controller, and the air source assembly comprises an air compressor. The testing head is connected to the host and comprises a shell, a vortex tube and a heater which are arranged in the shell and a nozzle arranged on the shell, an air inlet of the vortex tube is connected to the air source assembly, the cold end of the vortex tube is communicated with an inlet of the heater, an outlet of the heater is communicated with the outside of the shell through the nozzle, and the heater is electrically connected with the controller. The device is provided with the air compressor, loss caused by mismatching of the air source specification and the components in the testing head can be prevented, additional air source connection is not needed during operation, and convenience and rapidness are ac