Squamous epithelial cell hyperplasia is not cancer. Squamous epithelial cells are mainly distributed in the skin, oral cavity, esophagus, lungs, cervix and other parts connected to the outside world, and the main causes of hyperplasia are chronic inflammation, physical and chemical stimulation, viral infection, etc. The long-term existence of these disease-causing factors may lead to squamous epithelial hyperplasia, so squamous epithelial hyperplasia is not cancer. However, if there is atypical hyperplasia, that is, uncontrollable hyperplasia, there is a possibility of cancer. Therefore, once squamous cell hyperplasia occurs, it is necessary to go to the hospital as soon as possible for examination to determine whether there is atypical hyperplasia, and if there is such a situation, it is necessary to carry out surgical excision or further medication according to the doctor’s instructions.