The smell of urine in the morning may be physiological reasons, may also be due to disease factors. 1. Physiological reasons: for example, less frequent urination at night or sweating caused by the concentration of urine, as well as taking too much greasy food before going to bed, or stimulating spicy food, too sweet products, may cause heavy urine in the morning. 2. Disease factors: such as urinary tract infections, cystitis, urethritis, pyelonephritis, etc. will cause the growth and reproduction of pathogenic microorganisms in the urine, resulting in heavy urine in the morning; diabetes and other endocrine diseases may cause glucose in the urine, which can also cause the phenomenon of heavy urine in the morning. The smell of urine in the morning, if it is a physiological phenomenon does not need special treatment, if it is caused by disease should be actively examined and diagnosed.