Brain protein oral solution mainly plays a role in nourishing cells, especially brain cells, and its help in brain cell growth and axonal growth. Brain Protein Oral Solution is mainly a small molecule protein substance, also known as peptide, extracted from the brain of pigs. There is a foreign drug called Sprysin, which has been confirmed in a large number of studies to have a certain adjuvant effect on cognitive impairment caused by cerebral infarction and post-stroke, and also on the early stage of Alzheimer’s disease, and also on aphasia caused by stroke. Clinically, it can be selected according to the characteristics of the patient’s symptoms. The effect of domestic oral brain protein solution may be less effective than imported ones, and the evidence is less.