The language of blind children is a tool for blind children to communicate and think. Its formation and development process is basically the same as that of normal children, but visual impairment brings the following weaknesses to the formation and development of blind children's language:

(1) Because learning a language only by hearing, there are often phonetic defects, and it is impossible to communicate with adults with eyes, gestures, limbs and expressions in the process of speech formation;

(2) The spoken words often lack the foundation of perceptual image;

(3) The understanding of the concept of words is often one-sided and incomplete;

(4) Few parents ask questions or actively accumulate vocabulary because they don't understand, but if they are consciously cultivated, the language level of blind children can reach or exceed that of normal children of the same age.

The thinking of blind children is a psychological phenomenon of blind children. Its process is the same as that of ordinary children, and the defects of blind children's perception and speech development bring the following weaknesses to their thinking activities: analysis and synthesis are mostly based on limited perceptual experience, and often appear one-sided; Poor thinking in images, difficult to generalize; Lack of reasoning, judgment and association. With the compensation of correct education, blind children can correctly understand the world, increase their experience, enrich their language, image and abstract thinking, and develop to a normal level.