Objective To study the comparison of the curative effect of the threaded anchor and kirschner wire in the treatment of fracture of coronoid process of ulna and the influence of elbow joint recovery. Methods The clinical data of 80 patients with ulna coronoid process fracture from March 2015 to March 2019 were analyzed retrospectively, they were treated with open reduction and internal fixation, according to different fixation methods, they were divided into the threaded anchor group and kirschner wire group, 40 cases in each group. The peri operative condition, the Mayo Elbow function score and the excellent and good rate of clinical effect were compared between the two groups. Results The operation was successfully completed in two groups, there were no complications such as infection of incision, injury of blood vessels and nerves, etc, the operation time and hospitalization time in the threaded anchor group were significantly shorter than those in the kirschner wire group [(78.56±8.61)min vs (87.53±9.20)min, (3.20±0.78)d vs (4.51±0.63)d], the amount of bleeding in operation was less than those in kirschner wire group [(22.12±3.04)ml vs (31.57±3.51)ml] (P＜0.05); the follow-up results showed that the pain, motor function, stability, daily activity and total score of Mayo Elbow function score in the threaded anchor group were significantly higher than those in the kirschner wire group at after operation 1 and 3 months (P＜0.05), at after operation 3 months, the excellent and good rate of clinical effect in the threaded anchor group was 87.50%, significantly higher than the kirschner wire group 67.50% (P＜0.05). Conclusion Compared with the Kirschner wire, the threaded anchor is more effective in the treatment of ulna coronoid process fracture, the perioperative situation is better, and it can effectively promote the elbow joint function recovery, the safety is good, it is worthy of application and promotion.