Nausea and vomiting after eating asparagus are associated with indigestion, weakness of the spleen and stomach, and food poisoning. Asparagus contains a lot of protein as well as fiber, which is a food that is difficult to digest. People with indigestion will have digestive problems after consuming large amounts of asparagus, thus inducing indigestion, which can lead to nausea and vomiting. Some people will have a weak spleen and stomach and should avoid cold foods. Some people have nausea and vomiting after eating asparagus because of food poisoning. Asparagus contains oxalate, so avoid eating it together with high-calcium substances, otherwise oxalate will combine with high-calcium substances to form calcium oxalate, which will cause nausea, vomiting, body fever, dehydration and other toxic reactions.