The accumulation of soluble sugars, especially sucrose, in mature Vietnamese golden melon, has been reported to be the determining factor of the sweetness of fruits. The gene of SPS2 has been shown to be mainly involved in the metabolic signal pathway as those for the synthesis of sucrose. The purpose of the current study is to establish a procedure to investigate the expression of the gene of SPS2 in Cucumis melo L. The materials of melon’s exocarp and mesocarp tissues were applied to isolate the total of RNAs. The procedure of Real-time PCR within the primers of SPS-F and SPS-R was successfully established as seen through the results. As a result, the cycle threshold (Ct) of 27.19, and 28.12, respectively, were observed in the sample of exocarp and mesocarp tissues. For authenticity, the products were sequenced, as determined as the gene of SPS by BLAST (NCBI). In conclusion, the procedure of investigation of SPSs gene expression was successfully established in Cucumis melo L.