Muscle energy technique (MET) is used by many professions which are relevant to manual therapy. Bountiful objectives of this technique which are claimed to be efficacious are such as lengthening of contracted or shortened muscle, strengthening of weakened muscles and increasing the joint range of motion (ROM). Although research and clinical experience have shown that treatment of Hamstring flexibility is important, there is no widely acceptable form of treatment that is agreed upon to successfully improve the flexibility of hamstrings which may indirectly affect the back region. Post-isometric muscle relaxation and static stretch with stabilizing exercises led to increase in flexibility of hamstring and trunk forward bend in healthy people. Common disorder is low back pain that involves the muscles, nerves or bone of back. Pain may be of three types depending upon duration of pain that is acute, subacute or chronic. Muscle energy techniques and static passive stretching, both were effective in improving the hamstring flexibility and had better effect on improving hamstring flexibility in patients of non-specific low back pain. The use of METs and Static stretching Exercise for the improvement in health-related quality of life, pain and Range of Motion can be a useful approach. Keywords: Muscle energy techniques, routine exercises, Muscle Energy Techniques, low back pain, Pain, Quality of Life , Hamstring flexibility