New type of thermoelectric element with sloping structure is proposed to improve the working performance of thermoelectric element in the condition of same material consumption. Taking the conventional vertical thermoelectric element as a reference, multiphysics coupling is carried on the thermoelectric element with sloping structure by means of numerical simulation and controlling the parameters like hot side temperature, current and temperature difference between cold side and hot side. The influence of slope angle on the cooling performance of thermoelectric element is discussed stressfully. The results show that the larger the slope angle is, the lower the cold side temperature of thermoelectric element is. In the condition of small power, the cooling capacity and coefficient of performance (COP) increase with the increase of the slope angle. The best range of slope angle is 15°-30°. Electric field intensity changes suddenly in sloping structure. Sloping structure is more suitable for the thermoelectric equipment with small size and power.