Microinvasive squamous cell carcinoma 2mm is more serious. When micro invasive squamous cell carcinoma occurs, it indicates that the differentiation degree of local tissues is low, and although the volume is only 2mm, it may infiltrate and grow into the surrounding normal tissues and cause inflammation. Moreover, it may spread and metastasize through blood and lymphatic fluid, and the patient may have symptoms such as recurrent low fever, hemoptysis, emaciation, etc. Moreover, metastatic foci may be formed in liver or brain tissues, which may lead to serious damage of organ function. If the manifestation of micro-invasive squamous cell carcinoma 2mm is found, it is best to consider surgical resection of diseased tissues as early as possible, and in the later stage, regular radiotherapy and chemotherapy should be carried out under the guidance of doctors, so as to greatly reduce the incidence of recurrence and metastasis, which can help to improve the quality of life of patients.