The fillings are divided into the following: 1. zinc oxide clove oil mucilage, which has a soothing and analgesic effect on the pulp and can be used as a deep bedding material and widely used for the closure of cavities. 2. camphor p-chlorophenol, which is a wide range of highly effective poisoning agents, mainly used for root canal disinfection, can gradually reduce the bacteria in the root canal and achieve a sterile state. 3. formaldehyde cresol, which has the effect of coagulation protein, can be used for the disinfection of infected root canals. In live pulpotomy, it can cause coagulation necrosis of root pulp and preserve it in the root canal in a sterile state. 4. calcium hydroxide, which has disinfection effect, can be used in root canal disinfection and apical induction molding.