Background:
Becker muscular dystrophy (BMD) is an X-linked neuromuscular disease caused by dystrophin gene mutation. It usually occurs in male, while females are usually the carriers of the abnormal chromosome. Patients might present with limb weakness and muscle atrophy with a chronic progressive disease course. In addition to skeletal muscle involvement, BMD can also be complicated with cardiac injury. In this case report, we presented the clinical data of a male patient with BMD complicated with dilated cardiomyopathy (DCM) and survey results of this pedigree.