The poetic characteristics of Liu Zongyuan are closely related to his family.The failure to revitalize the family and concerns about its prospects have given rise to his paranoid mentality in poetry;His mother's upbringing and teaching,as well as her illness and demotion due to Liu himself gave rise to a sense of crisis in his poems.At the same time,after his exile,Liu experienced the upheaval of strong and weak cultural ecosystems and social classes.This process is reflected in his poetry as a nostalgia for the strong cultural ecosystem,a sense of distance from the feeble cultural ecosystem,and special care for the vulnerable groups.In addition,in Liu's poetry,"Chang'an"often plays the role of hometown,which is due to his different choices from Liu Yuxi of Chang'an cultural ecology.