Baker-type progressive myotonic dystrophy progresses slowly (the disease can last more than 25 years, and often can still walk after 20 years of age); it is not accompanied by myocardial involvement or only mildly involved, and has a good prognosis, also known as benign type. The disease is a hereditary disease, multi-linked recessive inheritance, individual for chromosomal recessive inheritance. What tests should be done for benign pseudohypertrophic myotonic dystrophy symptoms: 1. Heterotypic cell test in peripheral blood: Heterotypic cell test in peripheral blood is one of the cytological tests of the nervous system and is commonly used for the diagnosis and differential diagnosis of lipid-like deposition disease, type II glycogen deposition pain, beta-lipoprotein deficiency disease, and progressive myotonic dystrophy. 2.Electromyography: electromyography is a means of auxiliary examination of disease through electromyography. It is a method to record the electrical activity of muscles at rest or contraction by using electronic instruments and to check the excitation and conduction function of nerves and muscles by applying electrical stimulation. This test can determine the functional status of peripheral nerves, neurons, neuromuscular junction and muscles themselves. 3.Body organ function and nutrition: Body organ function and nutrition are closely related to food intake, digestion, absorption and metabolism, etc. Good or bad can be used as one of the criteria for identification and degree of disease, and also as one of the criteria for diagnosis of body organ function.