Abstract：The new mini watermelon Fl hybrid‘Chenglan’is of early maturity bred by crossing SW039 as female parent and SW040 as male parent．It takes 28-32 days from pollination to maturity．The fruit is of oval shape and green in color with thin deep green stripes．Single fruit weight is 1.8-2.5 kg．Its skin thickness is about 0.5 cm．The orange yellow flesh is crisp with excellent taste and flavor. Its soluble sugar content is 11.0 %-12.4 %．It is tolerate to low temperature and weak light. It has high fruit setting capacity．The yield is 27.0-34.5 t?hm-2．It is suitable to be planted in early spring，summer and autumn under plastic cover.
