Hypoechoic foci within the bladder is the term used when performing an ultrasound. Hypoechoic foci in the bladder is an abnormal ultrasound phenomenon, which may be due to the presence of deposits, clots, tumors, etc. in the bladder. 1. Deposits in the bladder: deposits in the bladder are mostly sediment-like hypoechoic, changing shape in different positions, mostly due to the patient’s low water intake and concentrated urination, and the hypoechoic foci usually disappear after drinking a lot of water. 2. Clots in the bladder: clots in the bladder, usually in the form of hypoechoic clots, can be moved by changing position, further examination is needed to clarify the cause of the disease. If caused by cystitis, you should take medicines under doctor’s guidance, such as ceftriaxone sodium, levofloxacin, etc. In the process of treatment, drink more hot water, urinate more, and do not eat spicy and stimulating food. 3. Bladder tumor: it usually manifests as hypoechoic mass, irregular shape, etc., with blood perfusion at the base and cannot be moved by changing position, which can be accompanied by interruption of bladder wall. If the bladder tumor is confirmed, the patient should actively consult the doctor and under the doctor’s guidance for surgical treatment. If hyperechoic foci are found in the bladder during examination, it is recommended that the patient should consult the doctor in time, improve the corresponding examination, and combine with the patient’s clinical symptoms for comprehensive judgment and targeted treatment.