Objective To assess the ability of the color doppler ultrasound to detect intussusception owing to colonic polyp in children.Method Review of the records and imaging studies of 36 children with intussusception due to polyp diagnosed between 2010 to 2017.Results The intussusception were depicted on sonography in 36(100％)of 36 patients. 10 cases (27.8%) by ultrasound in the diagnosis of polypoid lesions, which showed that lesions are medium echo and with abundant radial blood flow signals. Intestinal polyps were not found in 26 cases.According the results,the appropriate surgical treatment is given to the patient.conclusion The sensitivity and specificity of color Doppler ultrasonography in diagnosis of intussusception in children are very high. The color Doppler ultrasound can find polyps ,which help find the cause of intussusception.