1, Gastrointestinal weakness: Water bamboo tastes sweet and cold, gastrointestinal weakness, stomach cold, ulcer and suppuration are best not to eat, otherwise diarrhea and other discomfort will easily occur, and even the condition will be aggravated.

2. Patients with lithiasis: Zizania latifolia contains more oxalic acid. When food containing calcium salt is encountered, calcium salt will form calcium oxalate with oxalic acid, and calcium oxalate will easily precipitate into stones. Therefore, patients with lithiasis should be careful when eating water bamboo, and it is best to cook water bamboo first.

3. Patients taking sulfonamides: Zizania latifolia is an acidic food. If it is taken together with sulfonamides, sulfonamides are easy to form crystals in acidic environment and damage the kidneys. Therefore, patients taking sulfonamides should not eat Zizania latifolia.

4. Suitable crowd for Zizania latifolia: it can be eaten by the general population, especially for patients with hypertension, patients with icteric hepatitis, women in postpartum hypogalactia, patients with excessive drinking and alcoholism.