Jet cooling is one of effective ways to transfer the great flux density heat,and the heat sink shape of jet impingement is a key point affecting heat transfer. The new cone heat sink proposed is numerically simulated by using RNGk-ε turbulence model under the condition of jet impingement through a single spray nozzle and the result is verified by experiments. The result indicates that the cooling effect of heat sink with a single cone is better than that of usual flat plate heat sink,and when compared with the latter,the former has an additional transition region where is a secondary impingement which strengthens the heat transfer. The greater theRe number becomes,the better effect of the cone heat sink will be; the numerical simulation about different cone angle (15°-60°) of heat sinks shows that 45° cone angle of heat sink provides a higher value of number than the others; whend₁ (diameter and conical bottom) /d (jet diameter) is 1-3,and whend₁/d is about 2.5,it gets a higher value of number compared to the others; whenH (height of the jet) /d is 5,nothing about the cooling effect of heat sink is so good as thatH/d is about 5.