Cardiac mucinous tumors are usually caused by differentiated growth of mesenchymal cells, which protrude into the cardiac chambers of the patient to form a tumor. The cause and mechanism of cardiac mucinous tumors are still unclear in the clinic, and most of the cardiac mucinous tumors may be sporadic, and some of the patients with cardiac mucinous tumors may be caused by the family heredity. Cardiac mucinous neoplasms are common primary cardiac tumors, which may manifest with symptoms such as lethargy, fatigue, fever, lethargy, low appetite, etc. Some of the patients may also be accompanied by painful erythema, arthralgia, urticaria, etc. The majority of cardiac mucinous neoplasms are benign in nature. Most of the cardiac mucinous tumors are benign tumors, there is no specific drug treatment, once diagnosed, surgical resection is the best treatment. If surgery is not possible, intravenous epinephrine, levosimendan and other medications can be used to relieve the patient’s symptoms as prescribed by the doctor. If there is a suspicion of cardiac mucinous tumor, it is recommended to go to the hospital for a comprehensive examination in a timely manner, under the guidance of the doctor to carry out the correct treatment, so as not to cause serious impact on the patient.