Kidney cyst 11x9mm usually does not need to be treated and regular review is enough; however, if it is combined with infection, bleeding, malignant changes, etc., it needs to be treated in time. Kidney cyst of 11x9mm belongs to the cysts with small diameter, which usually will not cause adverse effects to the body, so it usually does not need to be treated. If it is accompanied by infection, bleeding, malignant changes and other phenomena, we should pay attention to it, and follow the doctor’s instructions through the cyst puncture and drainage, anti-infection, hemostasis, surgery and other symptomatic treatments, in order to achieve both symptomatic and curative purposes. Although 11x9mm kidney cysts are small, they should not be taken lightly, and ultrasound examination should be carried out once every six months or once a year to ascertain whether there is any increase in the size of kidney cysts. You should maintain a low-salt and low-fat diet in your life and stop holding urine to avoid increasing the burden on your kidneys. Patients with renal cysts 11x9mm are advised to go to regular hospitals and follow the doctor’s instructions for standardized treatment.