Facing supercooled large droplet（SLD）environment， an effective ice detection method is a prerequisite for implementing the avoidance strategy and leaving the icing environment of SLD as soon as possible. Based on the dynamics model of SLD， the water droplet collection characteristics of the double impact surface probe for SLD environment detection requirements are simulated and analyzed to study the parametric design of the probe shape. The key geometric parameters that affect the distinction of SLD environment are clarified， which provides a theoretical basis for the probe shape design. Typical detector shapes are selected for simulation calculation. The simulation calculation results show that under the normal water drop condition， the icing mainly occurs on the first windward side of the detector， and the icing thickness on the second windward side is very small， which is obviously different from that on the first windward side. Under the condition of SLD， the ice layer accumulates on the first and the second windward surfaces. The water droplets with different diameters can hit the different positions on the probe and form different ice accumulation characteristics. The results verify the effectiveness of the parametric design method of the probe shape for SLD environment detection.