The invention discloses a method for developing polymorphic SSR markers based on transcriptome sequences. The method comprises the following steps: S1, the transcriptome sequences of a plurality of samples of a target species are obtained; S2, potential SSR site information is detected; S3, the types of SSR locus repeats and adjacent nucleotide sequence information of the SSR locus repeats are obtained by screening; S4, polymorphic SSR candidate loci among the samples are screened; and S5, transcriptome sequence sets carrying the polymorphic SSR loci are spliced into a non-repetitive contig Uni-contig, primers are designed according to a side wing conservative sequence of the non-repetitive contig Uni-contig, and marker polymorphic detection is conducted. The polymorphic SSR markers can beeffectively screened through the transcriptome sequences, the configuration requirement for a computer is reduced, the method can be completed by a common computer, the effectiveness of the molecularmarker primers is effectively improved, the development time is shortened, the development cost is reduced, meanwhile, the PCR amplification fragment length of the polymorphic SSR markers and linkagegene function information of the polymorphic SSR markers can further be predicted, the development efficiency of the transcriptome SSR markers is remarkably improved, and molecular assisted breedingand functional gene research are promoted.