Objective: To study the relationship between ganglion and joint as well as Ultrasonographic characteristics study on the diagnostic value of ultrasound in diagnosis of such diseases.Methods: 67 cases with ganglion cyst ultrasound and confirmed by postoperative pathology.Integrated analysis of the sonogram.Results: Based on the location of ganglion cyst and joint relationship,it can be divided into 2 types: external ganglion and ganglion cyst in the joints.On the sonogram,ganglion cyst appears to echo Echo cystic,cystic and mixed as well as solid hypoechoic.Conclusion: Ultrasonic examination plays an important role in the diagnosis of ganglion cyst.