The invention discloses a shock absorption device suitable for agricultural machinery. The shock absorption device comprises a rack. A shock absorption assembly and a heat dissipation assembly are arranged on the rack. The shock absorption assembly comprises a first sleeve, a spring, a second sleeve and an upper top plate. The second sleeve is provided with the heat dissipation assembly, The heatdissipation assembly comprises a heat dissipation cavity, heat dissipation liquid, heat dissipation pipes and heat dissipation fins, wherein the heat dissipation cavity is formed in the middle of thesecond sleeve in the circumference direction and filled with the heat dissipation liquid, one end of each heat dissipation pipe is inserted into the heat dissipation cavity, the other end of each heatdissipation pipe extends out of the heat dissipation cavity, a through hole is formed in the middle of each heat dissipation fin, the end, extending out of the heat dissipation cavity, of each heat dissipation pipe is fixedly connected with the corresponding heat dissipation fin through the corresponding through hole, and a limiting block is in threaded connection with the end, close to the corresponding heat dissipation fin, of each heat dissipation pipe. The shock absorption device suitable for agricultural machinery not only has the shock absorption function, but also has the cooling function.