The specific gravity of urine is 1.005, which is slightly lower than the normal value. Whether treatment is needed needs to be decided by combining the patient’s symptoms, and other items in his routine urine examination. First, if the urine specific gravity is slightly lower than normal, without any symptoms of urinary tract irritation, it is recommended that the patient control the amount of water consumption appropriately, without the need to use any medication, and the amount of water consumed per day is about 1000-1500ml. Secondly, if the urine specific gravity decreases, accompanied by a decrease in the pH value of urine, which is lower than 6 or below, and if it is not accompanied by any symptoms of urinary tract irritation, the patient can take sodium bicarbonate tablets orally 1 tablet/times, 3 times/day for one week, and then retested after one week. Thirdly, if the decrease in urine specific gravity is accompanied by an increase in the number of leukocytes in the urine, it is recommended that a further urine culture be performed. If the culture can be seen pathogenic bacteria, it is recommended to take oral anti-infective drug treatment, you can orally take levofloxacin hydrochloride capsule 1 capsule / times, 3 times / day for a week, sodium bicarbonate tablets 1 tablet / times, 3 times / day for a week, one week after the retest of urine.