The invention provides a self-suction centrifugal pump with double wing wheels. The self-suction centrifugal pump comprises a working pump body, the working wing wheel and a transmission shaft. The working wing wheel is fixed to the front portion of the transmission shaft. The front end of the working pump body is provided with a pumping inlet. A pumping outlet is formed in the upper portion of the working pump body. The self-suction centrifugal pump further comprises an auxiliary pump body and the auxiliary wing wheel located in the auxiliary pump body. The auxiliary pump body is fixed behind the working pump body. The auxiliary wing wheel is fixed to the transmission shaft. The auxiliary wing wheel and the working wing wheel are separated through a pump cover or a steel plate. A transmission gap is formed between the pump cover or the steel plate and the transmission shaft. The cross section of an inner cavity of the auxiliary pump body is elliptical. The self-suction centrifugal pump is simple in structure and high in volumetric efficiency, and the up-suction height is greatly increased.