For the requirements of high-power LD pumped solid-state lasers，the concept of energy management is put forward.The functions of energy storage components，switch components，sampling resistance，discharge resistance in the energy management and the methods for reducing the loss were analyzed in detail.When the resistance and capacitance drop in power source are reduced，this method can improve energy efficiency and increase the energy conversion efficiency.Through the analysis of the experimental results，the energy conversion efficiency of the power supply can be as high as 88 percent，which verifies the feasibility of energy management strategy.