PEM engine test system for fuel cell engine performance according to GB/T24554 standard cold/hot start test (cloud supporting environment bin), rated power test, peak power test, dynamic response test, stability characteristic test, emergency/gas shutdown and restart test, hydrogen utilization test, gas tailpipe concentration test, insulation resistance test and other aspects Mandatory inspection; It can also be used for performance tests (dynamic tests and power tests), simulated real car tests, durability tests and other performance tests in commissioned tests.