Abstract: Abstract: 【OBJECTIVE】 Liaoning cashmere goats’ genetic polymorphism of KAP gene was studied and the relationship between polymorphism loci and economic traits （cashmere trait and weight trait） was analyzed in order to find molecular marker of MAS, applying theory basis for next molecular breeding. 【METHOD】 The polymorphism of KAP gene was studied by PCR-SSCP. The least square mean(LSM),the least effect(LSE) and genetic variance of different genotype at 4 polymorphism loci were analyzed, the selection reaction was forecasted by genetic correlation between marker loci and genetic variance of economic traits. 【RESULTS】 In cashmere yield trait, LSM of AA and AB at S1 was significant difference （P<0.05） with BB genotype, BB at S2 was significant difference （P<0.05）with AA and AB genotype ,AA and AB at S3 was significant difference （P<0.05）with BB genotype, AB at S4 was significant difference （P<0.05）with AA and BB genotype; In weight trait , LSM of BB at S2 was significant difference （P<0.05）with AA and AB genotype, AA and AB at S3 was quite significant difference （P<0.01）with AA and AB genotype, BB at S2 was significant difference （P<0.05）with AB and AA genotype. 【CONCLUSION】S1-AB ,S1-BB,S3-BB and S4-AB was the favorable marker genotype for cashmere yield trait, S3-AA was the favorable marker genotype for weight trait, S2-BB was the marker genotype of cashmere yield trait and weight trait Keywords: Liaoning Cashmere goat, KAP, Economic traits

Key words: Liaoning Cashmere goat, KAP, Economic traits