Urine has a specific odor because it is the main route of waste elimination from the body, mixing 5% of metabolites with 95% of water. Therefore, the smell of urine is related to the amount of water consumed on a daily basis as well as the diet, and can be divided into physiological and pathological conditions. Physiological causes include the following: if the daily water intake is relatively low and the activity is relatively low, the urine will have a concentrated condition, which may lead to a relatively large smell of urine. If you have recently eaten some spicy and irritating food, it may also lead to an increase in the smell of urine. The first time you urinate in the morning, the urine becomes concentrated during the night, which can also lead to yellow color and heavy odor, which is a physiological condition. Pay attention to drinking more water and eating a lighter diet everyday, and your symptoms will slowly improve. If you have recently taken some medications such as vitamin B or recently eaten some carrots, the color of urine may become red or deepen, and occasionally there may be a special smell, after stopping the medication or changing the diet, the symptoms will slowly improve. If it is obvious that the color of urine is red and there is a special smell at the same time, consider that there may be urinary stones or inflammation of the urinary tract, in this case, the patient may be accompanied by abdominal pain and discomfort, it is recommended to go to the hospital urology department in time to hold urine for ultrasound, as well as urine routine tests to further clarify the diagnosis and condition. In addition, if the urine smells large and there is a sediment-like substance at the same time, consider that there may be abnormal kidney function, it is recommended to go to the nephrology department of the hospital for examination and quantitative examination of urine protein indicators to avoid missing the condition. In short, you can first adjust your diet and drinking habits to ensure eight glasses of water every day, and if the urine continues to smell heavy, it is recommended to go to the hospital for examination.