As described in IEC standard (IEC 6125:2005 and IEC 61646:2008), 2400Pa or 5400Pa mechanical load test was performed in static status.However, PV modules are not only exposed to static mechanical loads, such as snow and wind loads, especially the highly dynamic loads occur when wind trigger oscillation.Under this situation, solar cells, interconnects and/or electrical bonds within the module are susceptible to breakage or if edge seals are likely to fail due to the mechanical stresses encountered during installation and operation.In order to analyze the effects of dynamic mechanical load on the performance of photovoltaic modules, this paper work out a test sequence to evaluate the mechanical and electrical behaviour of crystalline PV module.Meanwhile,combine with IEC61215 and IEC 61730 to investigate output power degradation, insulation & dielectric withstand test, EL test and wet leakage current test.