Vomiting and fever after eating egg yolk may be caused by allergy, indigestion, gastrointestinal bacterial infection and other reasons. 1. Allergy: Allergy refers to the tissue damage and dysfunction produced by the body receiving the same antigenic stimulus again, clinical symptoms are mostly manifested as rashes, diarrhea, vomiting, etc. Some patients may also have some fever, so patients allergic to egg yolks will vomit and fever. 2. Indigestion: indigestion refers to the discomfort of the stomach and duodenum in the upper abdomen, which is often characterized by early satiety, vomiting, nausea, constipation, fever, etc. If egg yolks are added at the wrong time or consumed in excess, they may cause indigestion. 3. Gastrointestinal bacterial infections: Gastrointestinal bacterial infections are caused by a variety of bacterial infections, the cause of which is mostly caused by the consumption of unclean food, and in the clinic, there will be vomiting, nausea, vomiting, acid reflux, fever and other symptoms, if the egg yolks are not clean, then it will cause gastrointestinal bacterial infections. In serious cases, it is recommended to go to a regular hospital for consultation.