Abstract: Electrolytic cell is the key equipment of photovoltaic electrolysis water hydrogen production technology, and its performance is the key factor affecting the development of hydrogen production technology. Alkaline electrolyzer(AEL) and proton exchange membrane electrolyzer(PEMEL) have nowadays been used in engineering. The two kinds of electrolytic cells have advantages and disadvantages in economy and technology. Therefore, the application technology of hybrid electrolytic cell is put forward. Firstly, the comprehensive evaluation method of AHP and entropy weight method is proposed, and the optimal model of the hybrid electrolytic cell system is obtained according to the proposed method. Secondly, the hybrid electrolytic cell system was applied in the light-storage coupling hydrogen production system, and its simulation model was built. On this basis, multiple performance indexes of the three types of electrolytic cells were compared and analyzed. The results show that the cost of the hybrid electrolyzer is 56% of the equipment cost of the same capacity PEMEL, and the electrolytic efficiency of the hybrid electrolyzer can reach 91.5%, which proves the applicability of the proposed scheme.