Woven snails cannot be eaten. Reason: Snails are non-toxic, and their lethal toxicity is obtained in the growing environment. It is poisoned by eating poisonous algae and accumulating algal toxins, and some neurotoxic toxins of poisonous algae are attached during its growth. Due to the massive discharge of mariculture, industrial waste and domestic sewage, seawater is eutrophic, and red tides frequently occur in the South China Sea, the East China Sea, the Bohai Sea and the Yellow Sea in different seasons. Some algae that breed in red tide will produce toxins, and snails are poisoned by ingesting toxic algae, accumulating microcystins, or other toxic substances such as tetrodotoxin. Paralytic shellfish poisoning is the main toxin caused by snails, which is similar to tetrodotoxin. Poisoning patients mainly have symptoms of nerve paralysis, and the mortality rate is high. Poisoning symptoms: because snails contain "toxic toxins", people will be poisoned by nerve conduction interruption after eating, which can cause dizziness, vomiting, numbness of lips and fingers. The shortest incubation period is 5 minutes and the longest is 4 hours.