The invention discloses a parallel four-link mechanism for a deicing and obstacle removing mechanical device. A transmission motor (12) drives a lower parallel four-link (3) to rotate, and the lower parallel four-link then drives an upper four-link rotating fixing seat (1) to move up and down. The parallel four-link mechanism for the deicing and obstacle removing mechanical device has the advantages of simple structure, convenient use, stable and reliable transmission and the like.