An integrated loop heat pipe radiator w ith parallel multi-channel was fabricated to solve the problem of high power LE D heat dissipation.Experiments were conducted to study the effects of heating po wer,inclination angle and filling ratio of liquid on the heat performance of this new structure radiator,and water was used as working fluid.The results show that the new structure loop heat pipe radiator makes the top surface and bottom surface have a uniform temperature, and when the heating power of the chip is 200W,the maximum temperature of he a ting surface center does not exceed 71.8℃.Inclination angle almost has no effect on the performanc e of the new structure loop heat pipe.With the heating power increasing in a certain range,the new stru cture loop heat pipe radiator′s thermal resistance is decreasing,and when the heating power of the chip is 240W,the thermal resistance has the smallest value of 0.19K/W.Experimental results also show tha t this new structure integrated loop heat pipe radiator with parallel multi-channel for high-power LED not only has good heat transfer performance,but also enhances the ability to carry high heat flux.