Thymic cysts are benign lesions originating from the thymus gland, most of which are caused by congenital developmental abnormalities, and cannot be cured simply by taking anti-inflammatory drugs, but need to be surgically removed. Thymic cysts are associated with congenital developmental abnormalities and acquired physical and chemical stimuli. Thin-walled lesions with intracapsular fluid are benign lesions. Most of the thymic cysts will not be effective by taking anti-inflammatory drugs, and some of them will not be cured by controlling the infection through anti-inflammatory drugs during the acute infection stage. Intended to treat thymic cysts, mainly through surgery to do radical resection, to release the surrounding compression. Thymic cysts, the main thing is easy to trigger the neighboring compression symptoms, resulting in obvious neurological abnormalities, the need for timely medical observation, standardized treatment under the guidance of clinicians.