The invention discloses an automatic testing device and method universally used for multiple bus processor modules. The automatic testing device comprises a power supply unit, wherein the power supply unit is connected with an industrial personal computer, a programmable oscilloscope, a programmable power supply and a signal acquisition subdevice; the industrial personal computer is connected with an equipment access box, an equipment adapter box is respectively connected with a multimeter and a digital I / O (Input / Output) control panel, the power supply input end of the equipment adapter box is connected with the power supply output end of the programmable power supply; the industrial personal computer is connected with the programmable oscilloscope, the programmable power supply and a communication board; and the programmable oscilloscope and the programmable power supply are connected with the equipment adapter box. The invention mainly realizes portable mechanical loading of different types of different bus processor modules, automatic loading of closed test programs, automatic testing of performances and breakage and short circuit property tests of all pins of the module. By using test hardware of the automatic testing device and matching developed test software, automatic recognition of the processor modules, automatic loading of the closed test programs, real-time display of performance test results, report output and other functions can be realized.