This project constructed a transcriptome database about 6 petal samples ofMelastoma malabathricum witch had two different flower color.There were 387 450 968 reads presented.The clean reads had 375 952 826 sections.The percentage of clean reads to the whole reads was 97.03%.The clean reads included 54 795 712 285 nt data information.The ratio of high-quality clean reads of 6 samples reached more than 95%.54 725 Unigenes were identified based on the assembling of high quality clean reads.The total length was 56 818 948 nt.The length of N50 was 1 909 nt.There were 316 210 813 sections readsmapped on Unigene witch.The matching rate was 84.109 2%.The number of unique mapped reads was 296 302 103,accounting for 78.813 6%.The obtained data could be useful for exploitation and utilization of function genes about flower color of Melastoma.