A linear actuator with cushion mechanism includes a driving body, a quick-release mechanism and a buffer member. The driving body includes a shell seat, an outer pipe and a telescopic tube. The quick-release mechanism is installed in the driving body. The buffer member is configuration on one side of the outer pipe. One end of the buffer member is connected to the outer pipe or the shell seat and other end of the buffer member is connected to the telescopic tube.本發明係為一種具有緩衝機制的線性致動器，包括致動本體、快釋機構及緩衝構件，致動本體包括殼座、連接殼座的外管及穿接外管的伸縮管；快釋機構安裝在致動本體；緩衝構件配置在外管的一側邊，緩衝構件的一端連接外管或殼座，緩衝構件的另一端則連接伸縮管。藉此，可降低伸縮管在快速縮回時的衝擊力。
