Speech apraxia is a motor speech disorder that is unable to perform voluntary movements for articulation and speech, and the abnormality is in the absence or cannot be explained by paralysis, incoordination, or diminished muscle strength of the speech muscles. Its etiology is due to brain damage, and most patients have unilateral damage to the left cerebral hemisphere and the third frontal gyrus. Speech loss is often accompanied by aphasia and rarely occurs alone. First, observe whether the patient’s spontaneous speech has the symptoms of speech aphasia: (1) The pronunciation errors lack consistency, and different mispronunciations occur when the same word is repeated. (2) Among the types of mispronunciation, consonant substitution is the most frequent, followed by consonant omission, addition, repetition, etc. (3) As the complexity of the motor regulation of the phonological organs increases, the number of pronunciation errors increases accordingly. (4) There are more errors when the consonant is in the head of the word than in other positions. (5) There are fewer errors in spontaneous speech and reactive speech, and more errors in purposeful, active imitative speech. (6) Pronunciation errors increase with the length and difficulty of words and phrases. (7) There is exploratory behavior of the phonological organs. (8) There are rhyme disorders, repeated self-correction, speed reduction, monotone, and stuttering-like pauses are also presented. (9) In most cases, the patient is concerned about his or her errors. If the patient’s speech is found to meet the above characteristics, it can be initially judged that he or she has a speech disorder. 2. Second, a professional speech therapist is required to make a final diagnosis after a detailed examination using specialized assessment criteria. At present, many hospitals use a combination of melodic therapy and Rosenbek’s 8-step method to treat patients with speech disorders and have achieved good results.