A ruptured sinus cyst that bleeds yellow fluid may stop on its own and will not heal on its own. If the sinus cyst continues to secrete cystic fluid, causing the cyst to swell, it may recur. If a sinus cyst ruptures and flows yellow water, the walls of the cyst will deflate after the yellow water runs out and may stop. However, if the sinus cyst is not removed, the cyst wall is always there, and it may continue to secrete cystic fluid, causing the cyst wall to swell again, and it is easy to have recurrent episodes, so the cyst should be removed as soon as possible, and treated with antibiotic drugs, such as penicillin and cephradine, etc., to promote healing. Therefore, ruptured sinus cysts flowing yellow water, it is recommended to consult a doctor as soon as possible, if necessary, as soon as possible to remove the sinus cysts, to avoid secondary infection or recurrence. Usually pay attention to nasal cleaning, you can use saline to rinse the nasal cavity, but not excessive cleaning.