Then in 2002, a breeding line WB33 with good breeding quality of multiple objectives has been, selected after a series of purification, selection and crossing for years. On January 22, 2008, WB33 has had plant variety right as a new variety Hualien No.4, after some tests including the combining ability test of F1 crossing, comparison test, regional trials and density trials. Bitter gourd Hualien No.4 is a vine with lots of branches. Its female flowers bloom from the twenty section of the main vine. The flowering period starts about 35 days for spring crop and 30 days for summer crop. Its exocarp is green and the face of the fruit has the process of pearls and bars. The fruit is long ovaloid and the weight of 20 to 50 grams. It can be reaped after flowering 12 to 15days for spring crop and 12 days for summer crop. The total yield each hectare is approximately 13.7 metric tons for spring crop and 18.2 metric tons for summer crop. Seedling nursing days are about 14 to 20, setting to flowering days 35, and setting to reaping days 15 for spring crop and12 for summer crop. Total reaping days are 45 to 60. Cultural period is 110 to 130 days.