The invention discloses an intelligent air blower testing system based on a PLC. The intelligent air blower testing system based on the PLC comprises a central processing unit, a DI/DO digital quantity module, an AI/AO analog quantity module, an Ethernet module, a main control computer, a printer and a sensor assembly; the input end of the sensor assembly is electrically connected with the input end of the DI/DO digital quantity module, and the output end of the DI/DO digital quantity module is electrically connected with the input end of the central processing unit; the output end of the central processing unit is electrically connected with the input end of the AI/AO analog quantity module; and the input end of the AI/AO analog quantity module is in wireless connection with the main control computer through the Ethernet module. According to the intelligent air blower testing system and method based on the PLC, the system can intelligently complete the whole testing procedure of an air blower, meanwhile, test data of the blower are automatically collected, problems can be conveniently found to be analyzed, great improvement is achieved in the aspects of both the testing procedureand manpower consumption, practicability is high, and use and popularization are easy.