It is definitely not normal to just drink water and not use the toilet. In this case, it is recommended that we must do kidney function tests to observe whether there is elevated urea nitrogen and creatinine. If you keep drinking more water without going to the toilet, it means that the kidney has abnormal urinary function and cannot excrete urine. Also pay attention to make an effective differential diagnosis, such as usually drinking little water and losing a lot of water on the body surface through breathing in a hot environment, so that there will not be much urine after drinking a little water. It is still important to pay attention to whether urine is formed and there is a large amount of urine storage in the bladder area that cannot be expelled. In this case, a diagnostic and differential diagnosis can be made with an ultrasound of the ureteral bladder of the kidney.