In non-displaced femoral neck fractures, excessive retroversion of the femoral head will affect the prognosis of the patient. However, the clinical research methods for this perspective are different, and the results are not consistent. In order to fully understand the impact of retrograde angle on the prognosis of patients with non-displaced femoral neck fractures, this article reviews related literature, aiming to explore the prognostic value and problems of femoral head retrograde angle in the treatment of non-displaced femoral neck fractures.