The child’s scrotum appears to be big and small, should be comprehensively analyzed, can be considered from two aspects, one is caused by the scrotal testicle enlargement, common causes include pediatric inguinal hernia, syringomyelia, testicular swelling, etc., need to go to the regular hospital in a timely manner through the specialists and testicular ultrasound and other necessary examination to determine the condition, and give relevant treatment in a timely manner. The other is due to the scrotal testicles appearing to shrink, common causes include testicular atrophy, dysplasia, also need to be diagnosed through ultrasound and other necessary examinations, and give relevant treatment in time.