Soy sauce should not be eaten after its expiration date. Eating soy sauce that has not passed its expiration date may cause abdominal pain, diarrhea, and other symptoms of food poisoning. Soy sauce should not be eaten after its expiration date because the taste and substances contained in soy sauce will change after the expiration date, and some soy sauce may harbor mold or bacteria after the expiration date, which can easily cause the soy sauce to deteriorate. If you ingest spoiled soy sauce, you may experience food poisoning, such as abdominal pain, diarrhea, nausea and vomiting, dizziness and headache. Generally, you should not eat soy sauce that has passed its shelf life or gone bad, and you need to eat soy sauce that has not gone bad within its shelf life. It is recommended that soy sauce be stored in a dry, ventilated place after opening, and the cap needs to be screwed on tightly after each use of soy sauce, which reduces the chances of bacterial growth. In addition, soy sauce is rich in sodium, usually moderate intake, should not consume too much soy sauce.