Aim: The aim of the present study is to clinically assess the effect of autologous blood injection into upper joint space and around the capsule for treatment of temporomandibular joint hypermobility. Patients and methods: Ten patient were involved in the study, Local anathesia was given for auriculotemporal nerve anasesthetization . A line is drawn from the lateral canthus to the most posterior and central point of tragus.The posterior point of entry is located along the cantho tragal line 10 mm from middle of the tragus and 2mm below the canthotragal line. The anterior point of entry is placed 10mm further along the canthotragal line and 10 mm below it . Two Needles (18 –gauge) are inserted in the upper joint space(UJS) . Through one needle, Ringer’s lactate solution 5 ml injected into superior joint space.The second needle act as outflow portal which allows lavage of the joint cavity . Three ml of blood is withdrawn from patients anti cubital fossa. 2 ml is injected into upper joint space(UJS) and 1 ml injected around the capsule . Occlusive head bandage was applied for first the 2 weeks .Results:The maximal interincisial opening is reduced after the injection. After the injection there was a gradual improvement of lateral excursions and protrusive movement. joint sounds on opening and closing movement and on side to side movement showed a statistically significant decrease in all cases after 6 months.Post-operative lateral tomogram radiograph show improvement of the condylar head position in relation to the glenoid fossa.conclusion: Autologous blood injection serves as an minimally invasive non surgical procedure and it can be performed in an out patient.