Proliferative scar is an overproliferative reaction produced by human idiosyncratic constitution, just like crab foot, which is still prone to recurrence after surgery. The use of traditional Chinese medicine for external application is a traditional Chinese medicine treatment method, which has been accepted by the general public for a long time. Generally, it can be used to activate blood stasis, resolve phlegm and remove turbidity to treat its stasis of blood and phlegm obstruction, which can stop the continued development of proliferative scar. Using modern preparation technology to make polymeric topical coating agent of traditional Chinese medicine, combined with anti-tissue proliferation Chinese medicine for internal use, can effectively control proliferative scar, improve characteristic body quality, reduce and prevent recurrence of proliferative scar. It will be welcomed by many patients and has good economic and social benefits when used in the clinic. 【Indications】 Hyperplastic scar, hypertrophic scar 【Treatment and Effect】 Treatment: Firstly, take Dan Shen tablets internally, 3-5 tablets each time, three times a day for three months. Danshen coating agent is applied twice a day, and the film is applied directly on the scar, beyond the scar by 1 cm, and left to dry naturally to form a film, locally or with external adhesive tape with pressure, and the limbs can be wrapped with bandages with pressure, 1 month is a course of treatment, 2-3 consecutive courses of treatment. The traditional Chinese medicine method of treating hyperplastic and hypertrophic keloid scars by internal and external application is obtained by repeated observation based on the summary of medical practice and animal experiments for many years. The film-forming agents and oral preparations developed by the modern preparation technology of the integrated external and internal Chinese medicine are convenient, safe and effective for clinical use. It has achieved very good social and economic benefits. At present, most of the external preparations carried out in China are traditional ointment and modern western medicine Babu agent or elastic adhesive tape method, combining internal and external preparation therapy is less reported. This method adopts the concept of combining internal and external treatment in TCM, which provides a method for traditional TCM to open a new field.