Objective To explore the value of ultrasound in the diagnosis of anterosuperior acetabular labral tears in patients underwent revision hip arthroscopy.Methods A total of 23 patients ［（ 8 males and 15 females，average age was （ 37.4±11.9） years］underwent revision hip with Ultrasound and MRI data were analyzed retrospectively，including 13 left hip joints and 10 right hip joints.Using arthroscopy as golden standard，the sensitivity，specificity，positive predictive value，negative predictive value and accuracy between ultrasound and MRI were calculated and compared.Results The sensitivity，specificity and accuracy by ultrasound diagnostic criterias 1 and 2 were 30%、100%、39.1% and 45%、100%、52.2% respectively.The sensitivity，specificity and accuracy by MRI diagnostic criterias 1 and 2 were 30%、100%、39.1% and 70%、33.3%、65.2% respectively.There was no statistically significant difference in sensitivity and accuracy of labrum tear detection between US and MRI （ P =0.180-0.549）.Conclusion There is a trend towards improved sensitivity and accuracy for anterosuperior acetabular labral tear with combining multiple ultrasonic signs and applying relatively loose indications on MRI.