The possible causes of garlic odor in urine are: 1. If you have eaten onion or garlic, it may cause a transient garlic odor in urine. You need to stop the relevant food intake to observe whether the smell is still present in the urine, and drink more water appropriately to maintain a certain amount of water to make the smell metabolized as soon as possible; 2. If there is organophosphorus pesticide poisoning, it can lead to a garlic smell in the urine. Patients often have a history of oral intake of pesticides and need to be sent to the doctor immediately for gastric lavage and other related treatment, and related detoxification treatment; 3. If there is a fungal infection of the urinary tract, there may be an acidic smell or a pus odor, accompanied by frequent urination, urinary urgency, painful urination and other symptoms. It is recommended that the relevant urine be retained for relevant laboratory tests to further exclude the presence of fungal infections; 4. If there is poor local hygiene, the presence of more dirt, prepuce, etc., can cause a fishy odor or garlic smell mixed in the urine, that there is a smell associated with urine. It is recommended to carry out local external genital cleaning and then observe whether the urine has a corresponding smell.