Farmers usually work in the morning and rest in the afternoon, because the sunlight is too fierce to bear. Last year, due to drought and long sunshine time, the left facial nevus started to increase in size and became flaky, rough to the touch, and the larger it was, the larger it was to the touch. The surgical excision of facial mass is simple, and the key is to repair the defective skin. Due to the rich blood supply of the face, the survival rate of the flap is very high, but there is a certain portrait risk in the face, and the flap should grasp the following points: ① the shape should be round, ② the rotation angle is appropriate to the location, ③ the rotational axis is longer than the defect axis, and ④ the tension is small.