Objective To study the influences of physiolog y,psychology and neurolinguisticson Han language.Methods(1)Aphasia tests were perfumed for 1670stroke patien ts of unilingual Han nationality.(2)Hearing-writing tests were perform ed for 135healthy adults.(3)Comparison the aphasia incidences i n stroke patients of different distr icts and different literate level gr oups.(4)Follow up study of aphasics intend to find their outcomes.Results(1)In our studies,the total aphasia incidence,the aphasia incidences afte r left and right hemisphere damage in dextrals,the aphasia types and other relevant symtoms of stroke patient s were different from that in most western literarure.(2)In the results of hearing-writing tests,there were more mistakes of single characters in hearing than two character words.Tw o character words vs,four character compound words or phrases were in a similar manner.(3)The aphasia incidences in the groups of higher literate level were lower t han that in group of lower level.This result was also different from that in the Occid entals.(4)The outcomes of our aphasics were favorable than that reported in western literature.Conclusion The causes of difference between chi nese and western people in language d isorders after brain disease were du e to the nature of language,ideograph and phonograph.The function of ideo graph of Chinese is not only confined in the left but also in the right or rather diffusible in both hemispheres.On comprehension of ideographic language by Chinese might not be depended on the sound of the character or word.The unit of perception,code and memory might be on the levels of co nception or proposition. Objective To study the influences of physiology y, psychology and neurolinguisticson Han language. Methods (1) Aphasia tests were perfumed for 1670 stroke patients of unilingual Han nationality. (2) Hearing-writing tests were performed for 135 healthy adults. (3) Comparison the aphasia incidences in stroke patients of different distr icts and different literate level gr oups. (4) Follow up study of aphasics intend to find their outcomes.Results (1) In our studies, the total aphasia incidence, the aphasia incidences afte r left and the right hemisphere damage in dextrals, the aphasia types and other relevant symtoms of stroke patients s were different from that in most western literarure. (2) In the results of hearing-writing tests, there were more mistakes of single characters in hearing than two character character. words character words., four character compound words or phrases were in a similar manner. (3) The aphasia incidences in the groups of higher literate level were lower t han that in group of lower leve (4) The outcomes of our aphasics were favorable than that reported in western literature. Confluence The causes of difference between chi nese and western people in language d isorders after brain disease were du e to the nature of language, ideograph and phonograph. The function of ideo graph of Chinese is not only confined in the left but also in the right or rather diffusible in both hemispheres. On comprehension of ideographic language by Chinese might not be depended on the sound of the character or word. The unit of perception, code and memory might be on the levels of co nception or proposition.