The invention relates to the technical field of debris flow, in particular to a wind wall type blocking dam. The wind wall type blocking dam comprises a main dam unit and wing dam units arranged on the left side and the right side of the main dam unit. An overflowing port is formed in a dam body of the main dam unit. Each wing dam unit comprises three dam body sections with the dam heights being gradually decreased. The upstream slope ratios of the main dam unit to the wing dam units are 1:0.8 and 1:0.6 respectively, and the downstream slope ratios of the main dam unit to the wing dam units are 1:0.2. Three rows of weep holes are formed in the overflowing port of the main dam unit and arranged in the shape of the Chinese character "pin". The slope ratio of the weep holes 3 is 1:0.1. A plurality of rebars arranged along the longitudinal axis of the dam body are further added into the main dam unit. The downstream sides of the two ends of the main dam overflowing port are each provided with a supporting wall. The downstream sides of the wing dam units on the two sides are each provided with a supporting wall. The embedded depth of supporting wall foundations is consistent with the embedded depth of dam foundations. He defect that gravity dams are high in dam site geological condition and dam abutment rock and earth mass strength requirements is overcome, the shearing strength of the dam structure is high, the impact resistance is higher, and the dam has the better deceleration and energy dissipation effects on macrosolifluction.