Cancer patients can eat wild vegetables, but only after they have been certified by professionals and should not pick them privately. Some wild vegetables are also edible, such as amaranth, parsnip, dandelion and caper. However, due to the general public’s lack of knowledge about wild vegetables, it is very easy to accidentally eat wild vegetables and thus cause physical discomfort, or worse, food poisoning. Therefore, the wild vegetables consumed must be identified by professionals to ensure that they are safe and edible. Generally speaking, wild vegetables are rich in high fiber, it is recommended to eat in moderation, not too much. In addition, cancer patients can eat more high-protein foods, fresh vegetables and fruits to ensure balanced nutritional intake.