Color ultrasound examination is one of the more advanced clinical auxiliary examination means in medical examination and the most commonly used imaging examination method. Reasonable application of color ultrasound examination can detect lesions early so as to take corresponding treatment measures. Ultrasound has a wide range of applications and can be used for organ tissue examination and functional determination: 1. Organ tissue examination: 1. Circulatory system: such as the heart, pericardium, great vessels, peripheral vasculature such as the arteries and veins of the extremities and the arteries and veins of the neck. Substantial lesions, such as hepatic hemangioma, hepatocellular carcinoma, liver cysts; 3, urinary system: such as the kidney, ureter, bladder, prostate, can be found in the kidney occupying lesions, hydronephrosis, kidney stones, etc.; 4, reproductive system: men have testes, epididymis, women have uterus, ovaries, can be observed whether the organ size, structural abnormalities; 5, other: such as the thyroid, breast, submandibular gland, parotid gland, eye, chest wall and abdominal wall, if there are organic changes, ultrasound examination can be applied to assist in the diagnosis. Functional measurements: including follicle monitoring, fetal growth and development, gallbladder contractile function, bladder reserve function, cardiac function measurement, etc.