The invention belongs to the technical field of optical communication, and provides a method for testing the performance of an optical switching chip module. The spectrum eye patterns of the optical switching chip module in 'single-port input' and 'multi-port input' states are acquired respectively by measuring spectrum transmission characteristics from the input ports to the output ports of the optical switching chip module, and an optical power gain or an extinction ratio curve is calculated, so that the performance parameters such as the extinction ratio, crosstalk, optical signal to noise ratio, bandwidth and jitter thereof, spectral form factor and the like of the optical switching chip module in various optical switching states can be visually observed and quantitatively determined. The method is suitable for testing various optical switching chip modules, particularly for testing an optical switching chip based on a micro-ring resonator. Through adoption of the testing method provided by the invention, effective testing measures and evaluation bases are provided for the links such as design development, modularized encapsulation, performance testing and the like of the optical switching chip, and the scientificity of chip testing is enhanced greatly.