Catharanthus roseus is also known as marigold, four seasons of spring, rising day by day, red rock head and thirty thousand flowers. Taiwan Province Province has bred many varieties, and the bigger the flowers, the greater the breeding trend. In the use of Chinese herbal medicines, the whole herb has the effects of relieving pain, diminishing inflammation, sleeping, relaxing bowels and diuresis. There are also doctors who include the compound prescription for treating cancer as the only medicine, possibly considering its anti-tumor components. The toxicity of the whole plant needs to be considered.