Osteoarthritis is the wear and tear of a joint that results in cartilage loss and subchondral bone changes. The patient presents with complaints of pain with movement, morning stiffness, and difficulty walking and doing daily activities. It is one of the leading causes of disability in individuals diagnosed with arthritis. Although strong evidence supports the preventive measure, there is no specific curative treatment related to knee osteoarthritis management. Exercises usually support increasing muscle strength and flexibility along with non-pharmacological treatment such as magnetic field therapy, transcutaneous electrical nerve stimulation, and therapeutic ultrasound focusing on improving pain. Laser therapy is a non-invasive measure that is usually used in treating several conditions. High-level Laser therapy is a painless measure with high radiation density useful in increasing local blood circulation, facilitating tissue regeneration, and gradual reduction in pain and edema. Method: The conventional exercise program helps in reducing the pain, along with the functional mobility of the individual enhancing the walking in the patient with knee osteoarthritis. The intervention was given for 12 days with the laser therapy on alternate days at the various aspect of the knee. The high-intensity laser was focused on the medial condyle and other areas of high pain intensity. Outcome Measure: The pre and post treatment measure of pain was assessed using numerical pain rating scale also the functional mobility was assessed using the WOMAC, sit and reach test along with 2 min walk test which are valid and reliable. Conclusion: High intensity Laser therapy has shown to be effective in improving the joint pain over the knee joint and also enhancing the functional status of individual in accordance with the conservative treatment of knee osteoarthritis.