Communication barriers include language barriers, cultural values and communication information events.

Communication disorder can be defined by observable symptoms in normal speech, language or auditory activities: first, objective characteristics, such as those that others can observe and measure; Second, social characteristics, such as the lack of understanding of the speaker's meaning and the inadaptable reaction in language interaction; The third is personal characteristics, such as personal response to self-understanding obstacles. Communication barriers may occur in the process of listening, speaking, reading, writing and thinking. Communication barriers mainly include hearing barriers, speech barriers and language barriers.

Second, speech disorder speech disorder refers to the abnormal phenomenon when speaking, including the abnormality of pronunciation, pronunciation and language flow. This obstacle can be observed when the speaker expresses and uses the spoken language symbol system. For example, dysphonia and stuttering.

Third, language barriers Language barriers refer to the fact that the language knowledge system mastered by individuals is not consistent with their age and lags behind normal people of the same age, which is an abnormality in understanding and using the language symbol system. For example: aphasia, slow language, northerners can't understand southern dialects.

Fourth, speech disability Speech disability refers to different degrees of speech disorder caused by various primary reasons, which makes it impossible or difficult to carry out normal speech communication activities. (This standard is applicable to children or adults over the age of 3 who have not recovered for more than one year or have a course of more than two years. As can be seen from the above definition, "speech disability" is a relatively broad concept, which includes "speech disorder" and "language disorder".