Due to the limited power of satellite loads, the space-based high-energy laser scheme can only be in the idea. In order to increase the space-based laser availability of space debris clean-up, the heat distribution of 1 064 nm continuous wave laser irradiation aluminum metal is researched. Through analyzing the continuous wave action on the thermal effect, the analytical model of the heating effect of metal materials and the numerical simulation of the temperature field distribution are established. On this basis, the feasibility of the low power density of the continuous wave laser heat damage on aluminum metal structure is analyzed. Under the condition of continuous wave laser irradiation at low power large spot, the working state of aluminum metal structure exist the comprehensive damage model of heat and mechanics. The space debris clean-up can be realized using the continuous wave laser with low power density.