Abstract: Objective To observe the effect of Ropivacaine on the healing of skin and the expression of granulocyte-macrophage colony-stimulating factor (GM-CSF) in mice with skin injury. Methods The mice were randomly divided into experimental group (Ropivacaine group) and control group (saline group). The wounds of mice in the two groups were stained by Masson staining. The concentrations of GM-CSF and hydroxyproline were determined. The wound healing rate and healing time were recorded. Results On the 5th day, the amount of green-stained collagen fibers in the experimental group was larger than that in the control group. On the 10th day, hyperplasia of margin epithelium in the experimental group was more obvious than that in the control group. The level of GM-CSF in the experimental group was significantly higher than that in the control group on the 5th day (P < 0.05). The wound healing time in the experimental group was shorter than that in the control group (P < 0.05). The wound healing ratio and the hydroxyproline level of the wound in the experimental group were higher than those in the control group on the 5th and the 10th day (P < 0.05). Conclusions Local infiltration of Ropivacaine can promote the healing of full-thickness skin lesions in mice, and the mechanism may be related to the promotion of GM-CSF expression.