The invention discloses a seat cushion composition structure. The seat cushion composition structure comprises a cushion base frame, the surface of a furniture base frame is wrapped with a soft surface layer, and the seat base frame comprises a solid wood core layer, a filling layer and a fireproof layer. The periphery of the solid wood core layer is wrapped with the filling layer, the filling layer is a phenolic foam material layer, the periphery of the filling layer is wrapped with the fireproof layer, and the fireproof layer is a flame-retardant paint layer. The soft surface layer is embedded in the surface of the cushion base frame, so that the surface of the furniture is rich in texture and is more suitable for being in contact with a human body, the use comfort of the human body is improved, and meanwhile, the advanced luxurious feeling of the furniture is correspondingly improved. The solid wood core layer is used as a base material of the cushion base frame, so that the strength can be effectively guaranteed. The phenolic foam material is used as the filling layer, so that the overall cost can be reduced, the manufacturing cost of furniture is lower, and the weight of the furniture can be reduced. Therefore, the seat cushion composition structure has the advantages of suitability for human body contact, high strength, lower manufacturing cost, lighter weight and the like.