The results: In vitro, Tan IIA promotes the differentiation of MC3T3-E1 cells by increasing the expression of Runx2, Osx and collagen I, improving the activity of alkaline phosphatase and calcium deposition. In vitro, IIA Tan promoted the differentiation of MC3T3-E1 cells due to negatively regulated miR-424, positively regulated BMP-2 and JNK activation pathways. In addition, Tan IIA activated the JNK pathway in MC3T3-E1 cells, and JNK pathway inhibition reduced the differentiation of MC3T3-E1 cells induced by Tan IIA. Tanshinon IIA has a positive effect on healing of fractures in vitro and in vivo. Overexpression of miR-424 also weakened the differentiation of MC3T3-E1 cells caused by Tan AII. METHODS: In vitro, MC3T3-E1 of pre-osteoblast cells from MC3T3-E1 MC3T3 mice were treated with Tan IIA. In addition, Tan IIA rejected the expression of miR-424 in MC3T3-E1 cells. It was not possible to diagnose, treat, cure, mitigate or prevent the occurrence of any disease or health condition by providing the information contained in this document. It is recommended that you consult a licensed physician before performing any natural, integrative, or routine treatment. Our study examined the effect of Tan IIA on fracture healing.