Abstract:Cai?Youxue,?born?in?Rui''an,?Wenzhou?in?the?Southern?Song?Dynasty,?is?a?scholar?of?Yongjia?School?under?the?guidance?of?Chen?Fuliang,?a?giant?of?Yongjia?school.?Cai?you?wrote?a?lot?of?works?before?his?students,?but?many?of?his?works?have?not?been?handed?down?so?far.?Combing?the?works?of?CAI?Youxue?is?not?only?conducive?to?the?study?of?CAI?Youxue?himself,?but?also?to?the?study?of?Yongjia?school?in?the?Southern?Song?Dynasty.This is of great significance for carrying forward Wenzhou regional culture.