The utility model relates to an all-optical buffer of multiple wavelength parallel storage to solve parallel buffer problem of dense wave-division multiplex signal and consists of an input power equalizer, a light buffer unit, a wave-division multiplex-de-multiplexer, an output power equalizer set and a wave-division multiplexer. The utility model adopts the multiple wavelength parallel storage technique of power equalization - parallel buffer - de-multiplex - power equalization - re-multiplex to maintain the synchronous buffering of multiple wavelength signals, so that the cross modulation among multiple wavelength signals can be effectively overcome, the signal-to-noise ratio can be promoted and the good buffer memory performance can be gained. Free adjustment on the cycle multiple of multiple wavelength signals buffer period can be realized in the utility model and the reading and writing time can be controlled with light signal writing and reading. The reading time can be started as required after storing signals; the event triggering can be realized without preset in the buffer. With great flexibility, the utility model is a real all-optical buffer suitable to all-optical routers or all-optical exchangers.