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Background Low back pain is highly prevalent problem in worldwide. Non specific low back pain it is defined as pain not attributed to recognizable, known specific pathology.The prevalence of low back pain was found in the Indian population ranges from 6.2 % to 92%. Increased age, low educational status, obesity occupation and psychological factors this are the risk factors is contribute in this condition. The angle of torsion, quadriceps angle (Q angle), tibial torsion, navicular drop, anterior pelvic tilt, this are the lower extremity alignment factors. maintaining the integrity of medial longitudinal arch the height of navicular bone is important. Navicular height measurement is commonly used to measure medial arch height. Studies have been conducted research the individual relationship between lumbosacral, hip and foot with low back pain or disability. AIM To assess the correlation of non specific low back pain and lower extremity alignment in market yard workers in sangli city. Methodology 130 subjects who fulfilled selection criteria included. men aged 25 to 45 who had 12 years experience and who worked 6 to 8 hours a day. Amputation, Participant with neurological condition, participant with know spinal disc prolapse, degenerative condition also the participant with spinal and lower limb deformities, surgery and injuries like patients are excluded in this study. To find out non specific low back pain using oswetry low back disability scale, lumbosacral angle in non specific low back pain, market yard workers using surgimap softwere. the angle formed between the line connecting T12 to ASIS and the line connecting ASIS to greater trochanter. To find out the angle of torsion of femur using craig's test. To find out the quadricep angle and tibial torsion using goniometer. To find out navicular drop using white card and measuring tape. To find out low back pain using oswetry low back disability index scale. Outcome Mesures Oswestry low back disability scale, goniometry, surgimap softwere, white cards, measuring tape RESULT Pain showed 5% significant and non linear association with right and left lumbosacral angle (P value: 0.001 on both side). Statistically the relation in between angle of torsion right and left side ( P value: 0.736 and 0.663), Q angle left side (P value: 0.543) and navicular drop at right side (P value: 476) are not significant. Pain showed non significant and linear association with right and left tibial torsion (P value: 0.098 and 0.167) also in right side Q angle ( P value: 0.975) pain showed non significant and linear association. But pain showed 5% significant with linear association with left side navicular drop (r-value 0.186, p-value 0.034). CONCLUSION This study concluded that the positive relation was found only in left side navicular drop, other there was no association between nonspecific low back pain and lower extremity alignment in market yard workers.