Background: Osteoarthritis of the knee is a common cause of pain and disability, especially in the elderly.1 Osteoarthritis is a condition characterized by the progressive loss of articular cartilage and remodeling of the underlying bone. OA affects almost all joints, but the most commonly affected joints are the knee and hip joints. Objectives: Primary objective : To assess the effect of hot water application with Epsom salt to reduce knee joint pain among women. Secondary objectives:1. To assess the level of knee joint pain of urban women before hot water application with Epsom salt. 2. To assess the effect of hot water application with Epsom salt to reduce knee joint pain in osteoarthritis among urban women.3. To find out the association of knee joint pain among women with selected demographic and clinical variables. Methods: An Experimental method .Sample size: 100 Urban Women. Material: Eleven Point Numerical Pain Rating Scale and Hot Water Application with Epsom Salt.Results: The hot water application with Epsom salt has shown Highly significant difference ( t=39.41 at p