The present invention relates to the technical field of polypeptide synthesis. Disclosed is a method for synthesizing goserelin. The synthesis method comprises: coupling Azagly and resin; sequentially coupling amino acids at an Azagly-resin amino terminus; using a removal agent containing tetrakistriphenylphosphine palladium and morpholine to remove an Arg guanidino protecting group in the peptide resin obtained in step B; and using a lysis solution to lyse the peptide resin obtained in step C, so as to obtain goserelin.
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