Objective To explore the short term clinical results of intramedullary cannulated headless compression screws for the treatment of proximal phalangeal closed transverse fractures. Methods 6 patients with 6 proximal phalangeal closed transverse fractures were treated with close reshaped and cannulated headless screws(CHS)fixation via mini incision in PIP joint, Functional exercise started 1 week after the surgery . Results All the patients were follow-up for 3 to 6 months,All the fractures healed favourablly,There were no obvious angular or rotationgal deformities , Rated by the total active range of motion (TAM)system , finger functions were excellent in 4 cases , good in 2 cases , with an overall satisfactory rate of 100%. Conclusion Intramedullary cannulated headless compression screws for the treatment of proximal phalangeal closed transverse fractures ,It is a minimally invasive 、firmly fixed to fractures and It facilitates early functional exercise and is an ideal internal fixation method