To determine whether a newborn’s balls (testicles) are normal or not, you need to clarify whether they are normal or not based on the size of the scrotum, scrotal position and other aspects, and you can also conduct a scrotal ultrasound examination. First of all, you need to observe whether both sides of the newborn’s scrotum are the same size, usually the right side of the scrotum will be slightly larger than the left side, if there is an obvious big one and small one, it is an abnormal phenomenon. Secondly, touch is also needed to observe the position of the testicles, if the testicles can be clearly palpated, it means that the position of the testicles is normal. In addition, scrotal ultrasound can clearly observe whether the testicles are normal or not, such as cryptorchidism, testicular torsion, small testicular tumors, scrotal trauma, etc., can be clearly diagnosed through this examination. If any abnormality is found, it is recommended to go to the hospital in time, and follow the doctor’s instructions to perform auxiliary tests to make a clear diagnosis.