Myostatin is a transforming growth factor-beta family member that normally acts to limit skeletal muscle cell growth and development.In order to detect the polymorphism of the Landaise goose MSTN gene exon 3,the PCR-SSCP was to be used.The results showed that the fragments with SSCP polymorphism were sequenced.The sequencing results showed that there was single nucleotides mutation,A→G at 1023.This study is useful to the selection of Landaise goose.