There is no exact time to return to normal for unclear speech in brain infarction; it may be 3 months, 6 months, or even longer. There are two cases of unclear speech in cerebral infarction, one is dysarthria caused by the muscles that command articulation, resulting in unclear speech and sometimes loss of voice. Another condition is the damage to the right hemisphere of the brain, which leads to aphasia after brain infarction. aphasia includes sensory aphasia, motor aphasia, also called expressive aphasia and transcortical aphasia, etc. The recovery of aphasia is more difficult. 1. dysarthria: brain infarction speech is unclear, active treatment of brain infarction, and after language training and other rehabilitation measures, dysarthria is recovered within 3 months, some recovery is good, some recovery may be poor. Some recover well, some may recover poorly; 2. Right hemispheric damage: aphasia caused by damage to the right hemisphere tends to recover more slowly, mild aphasia can recover within 6 months, severe aphasia may take longer; 3. Other conditions: severe cerebral infarction speaks unclearly, whether it is dysarthria or aphasia, due to the severity of the disease, the damage to the language cells of the brain The cell damage is slow to recover or the cell damage cannot be recovered later or compensated for, which may leave sequelae. It is difficult to recover from cerebral infarction because of unclear speech, and there is a certain recovery effect in mild cases, while severe cases may leave sequelae. But with sequelae should be treated positively, and also insist on treating brain infarction, and at the same time carry out training such as pronunciation, listen to radio, communicate more, read newspaper, recite poems, etc., and insist on training. After long-term treatment and training, there may be some effect.