After cerebral infarction, weak speech may be caused by decreased cardiopulmonary function or basal ganglia aphasia, and cardiopulmonary function training or speech training can be done. 1. Decrease in cardiopulmonary function: most of the cerebral infarction is caused by more serious cardiovascular disease, if the cardiovascular disease is more serious, it may also affect the local blood supply and normal oxygen supply, resulting in a decline in cardiopulmonary function, cardiopulmonary function training needs to be done, for example, absolute bed rest, oxygen therapy, which can effectively improve the speech weakness. 2. Basal ganglia aphasia: Basal ganglia lesions cause language dysfunction, treatment is generally based on rehabilitation, such as speech training and pronunciation training. Medication is generally ineffective, and rehabilitation is based on the severity of the aphasia. The treatment of the disease is generally based on the cause and severity of the decision, so the body in the occurrence of any symptoms of discomfort, you need to get to the hospital in a timely manner to do the relevant examination, and then do the relevant treatment.