Abstract: A test on different dosage of Paclobutrazol applied to areca taro was carried out. The results showed that spraying paclobutrazol had an effect of dwarfing plant and promoting the expansion of parent taro, and the optimum spraying amount of paclobutrazol was 50-80 g/667 m² (750-1200 g/hm²) with the amount of residue was lower than the limited standard.