The invention relates to a degradable tooth extraction wound filling composition, a preparation method and application thereof, and is characterized in that it comprises the following raw materials in parts by weight: 20-60 parts of calcium stearate, 10-40 parts of alginic acid / chitosan composite, biological 5 to 30 parts of active glass, 10 to 60 parts of tocopherol acetate, and 0 to 30 parts of poloxamer; including the following steps: mechanically mixing calcium stearate, alginic acid / chitosan composite, bioactive glass, poloxamer loxamer, then add tocopherol acetate, mix evenly to form a marl-like mixture, and obtain a degradable tooth extraction wound filling composition after shaping, packaging and sterilization; Composition for preventing tooth extraction complications. The degradable tooth extraction wound filling composition of the invention is a putty-like material that can be arbitrarily shaped and deformed, can fill tooth extraction sockets of any shape, has a long action time, stabilizes the hemostatic effect, and at the same time has the functions of repairing and bacteriostasis.