Nowadays, the energy crisis and environmental problems are increasingly severe, and it’s urgent to find a renewable clean energy source. With its high energy density and environmentally friendly advantages, hydrogen is regarded as an ideal energy carrier. One of the scalable and sustainable method, hydrogen evolution reaction, meets the future energy demands. As a promising hydrogen evolution catalysis, MoS2 has been widely studied, several methods has largely improved its function in acid electrolytes, however, its function in alkaline electrolytes hasn’t been effectively promoted yet. In this article, the porous 2D MoS2 is synthesized by hydrothermal method, then a lowcost simple electroplating method for MatelMoS2 nanocomposites fabrication is provided. Experiments reveal that CoMoS2 has a superior catalytic performance with small Tafel slope (81 mV·dev-1) and long term of stability. In 1 mol/L KOH, the overpotiential is as low as 186 mV at a current density of 10 mA·cm-2. Also, CoMoS2 performs better oxygen evolution reaction property, the overpotiential is declined to 360, compared with 460 mV of the pristine MoS2, which means CoMoS2 is prospecting for efficient whole cell water splitting reaction.