Female patients with pain on the left upper back side of the left back are generally treated clinically according to the different causes of pain: i. Pain caused by left-sided urinary stones, commonly found in left-sided kidney stones and left-sided ureteral stones. They cause distension and discomfort in the left kidney and ureter due to blockage of urinary excretion by stones. The pain symptoms in the upper left side of the left posterior back can be reduced by taking oral lithotripsy granules or extracorporeal impact lithotripsy to promote the excretion of stones with urine. Second, female patients with acute edematous pancreatitis can suffer from pain in the left upper side of the left posterior back due to peripancreatic tissue exudation. Once the diagnosis of pancreatitis is clear, patients need to be given anti-infection as soon as possible, active liver protection treatment, large amounts of fluid and inhibition of pancreatic enzyme secretion. In patients with milder symptoms, the pain in the left upper side of the left posterior back can be significantly relieved after 5-7 days of treatment.