Arabidopsis wild-type and psc1 mutant were used to investigate the anthocyanin accumulation induced by sucrose. The results showed that the anthocyanin was induced by sucrose and the expression of DFR, a key gene in anthocyanin biosynthesis, compared with wild-type, was clearly reduced in the psc1 mutant when the sucrose concentration was higher than 60 mmol/L. The psc1 mutant was treated by epibrassinolide with or without sucrose, and it was found that the application of epibrassinolide remarkably increased the sucrose-induced anthocyanin content and the expression of DFR gene of the psc1 mutant as well.