Dyslexia, also known as dyslexia, is a learning disability. It often manifests itself as a learning disability in reading, writing and math. 1. Reading: skipping words and missing lines, replacing words or not being able to understand what is being read, confusing similar words, e.g. “stick” and “cupped”, preferring to read books with pictures, rejecting books with lots of words, not being able to understand math application problems, slow reading, and still skipping words even when using a finger to assist in reading. 2. Writing: homophonic characters, e.g. “互相” may be written as “互香”, difficulty in copying from the blackboard, e.g. writing left and right upside down, misplaced radicals: e.g. “部” and “陪” in wrong font. and “陪”, the fonts are crooked, out of the grid line or too small, easy to write the wrong characters, have difficulty in holding the pen, and write slowly. 3. Mathematics: Difficulty in mental arithmetic, inability to memorize the 9-9-9 table, inability to think in terms of numbers, poor concepts of sequence or quantity, inability to understand the meaning of a problem, and difficulty in making logical calculations. Generally, the cause of dyslexia is attributed to theories such as phonological deficit, visual deficit, cerebellar deficit, etc. The specific cause is not clear for the time being. It is recommended that patients with dyslexia should seek timely medical treatment, standardized treatment under the guidance of a doctor, and rehabilitation training, so as to improve the ability to read and write.