The reasons that cause this state are as follows: protein in the dog's body increases, and the protein cannot be digested in the intestines and stomach and will be excreted through urine; gastrointestinal discomfort and indigestion result in protein in the body that cannot be broken down and can only be excreted ; The lack of B vitamins and probiotics in the dog's body will cause the dog to have clear urine, and the owner can restore it by supplementing it for a period of time.