Background-Mobilisation is defined as a manual therapy technique comprising a continuum of skilled passive movement to the joint complex that are applied at varying speeds and amplitudes, that may include a small amplitude/high velocity therapeutic movement(manipulation) with the intent to restore optimal motion, function, or to reduce pain. Purpose-Purpose of the study is to find out correlation between the cervical and thoracic spine after delivering mobilisation. Methodology- testing was performed using 3 D motion analyser in which 50 participants were taken(7 male and 43 females) aged between 18 to 30 years were taken and were given Transverse thoracic mobilisation at T1 and T2 spinous and transverse process for 1 minute at each side.(unilateral pain). Result and conclusion- transverse thoracic mobilisation at T1 T2 positively shows that there is decrease in neck pain and increase in range of motion at cervical segment. There was Maximum increase in left rotation angle, which was found to be- pre 61.92±13.153 Post 68.76 ±10.101(mean increase angle 6.84 ) and there was minimum improvement in right side flexion where pre mean angle was 37.84±8.728 and post was 41.24 ±8.893 (mean increase angle 3.4) Pre mean NPRS was 4.58 ±1.416 and post it was 2.02 ±1.421 (mean decreased pain was 2.56).All values were statistically significant at P= <0.001.