Abstract: A producing method of a tooth model for clinic practice having steps of: obtaining a tooth data, wherein the tooth data comprises inner and outer appearance and size of a real tooth; 3D printing a semi-finished tooth model according to the tooth data by using a first material and a second material, the first and second material is cured by light when 3D printing; wherein the semi-finished tooth model has a tooth body, a tooth pulp portion and a sacrificial portion; the tooth body is covered by the sacrificial portion and the tooth pulp portion is covered by the tooth body; the tooth body and the tooth pulp portion having a crown part at the top and a least one root part at the bottom of the semi-finished tooth model; the tooth pulp portion is in tube shape which is gradually contracted from the crown part to the root part; the tooth body is printed by using the first material and the tooth pulp portion and the sacrificial portion are printed by using the second material; the first material has greater mechani