Background: In frozen shoulder, the pectoralis muscles Undergoes tightness, which affects the shoulder joint mainly in the abduction and external rotation of shoulder. There are many physiotherapy interventions used in treatment of frozen shoulder and among them, Unilateral Self stretching of pectoralis muscles is done resolve the associated dysfunctions like pain and tightness. Objective: To compare the effectiveness of unilateral self- stretching of the pectoralis muscles in along combination with ultrasound in frozen shoulder stage 2. Methodology: 20 Patients with frozen stage 2 were selected and divided into two groups based on the selection criteria. Group A received unilateral self- stretching of the pectoralis muscles with the ultrasound and Group B received pendular exercise, fingers ladder and towels stretching exercise. shoulder pain and disability index used to measure the pain and disability and Active Shoulder range of motion using Goniometry were used as outcome measures pre and post treatment. Result: comparing pre to post intervention values in group A showed average improvement in shoulder abduction and B group showed significant improvement in shoulder abduction but Group A and Group B, there was significant improvement noted in external rotation and SPADI score Conclusion: The present study concluded that both the groups showed improvement statistically and clinically in terms of pain and ROM, but there is average improvement in the shoulder abduction who received unilateral self- stretching of the pectoralis muscles with ultrasound.