In order to achieve the results of an ultrasound, some people need to produce urine as soon as possible before the ultrasound is performed, thus filling the bladder. The usual choice is to promote urine production by drinking water, followed by urine holding. Because in the process of walking gastrointestinal peristalsis accelerated, resulting in rapid absorption of water, metabolism into the bladder, the formation of urine, can be faster to fill the bladder, easy to ultrasound, so compared to sitting to urge urine, walking to urge urine is more effective. ultrasound diagnosis is the use of ultrasound’s physical properties, the human body propagation of a variety of signals, with the way of the image to display, can be used for the diagnosis of disease. Especially for the examination of the urinary system and the reproductive system, the need to hold urine allows the doctor to fully distinguish between the bladder and the surrounding organs, and to examine the organs behind the bladder through liquid translucency, so that the images are displayed more clearly and accurately. In the case of examinations that require urine holding, drinking water improves the efficiency of the digestive system by repeatedly walking around, thus speeding up the conversion of water into urine and helping to store urine in the bladder more quickly. If the examinee is in good health, he or she can also combine activities such as climbing stairs and repeated squatting and standing up to promote urination. In addition, the subject can not only urge urine by walking before the ultrasound, without diabetes mention, moderate consumption of sugar water, can assist in increasing the osmotic pressure of the renal tubules in order to achieve the purpose of rapid filling of the bladder. However, patients with hyperglycemia, as well as diabetics, are strictly prohibited from using this method.