Positive bundle arm test can mainly reflect platelet number and function and capillary function; DIC is disseminated intravascular coagulation as hematologic abnormality, and the bundle arm test is positive. Bundle-arm test is a screening test used to check bleeding and coagulation disorders, and it can reflect platelet number and function as well as capillary wall abnormality by blocking arterial blood flow under pressure to check capillary fragility. DIC is the abnormal pathophysiological function of the blood system, coagulation and fibrinolytic system abnormalities, resulting in systemic microcirculatory system failure, often manifested as a positive bundle arm test. Positive bundle arm test should be promptly consulted and treated under the guidance of a doctor, while paying attention to daily safety, avoiding falls, eating a balanced diet, and paying attention to rest.