The need for immunohistochemistry does not necessarily mean that the tumor is malignant, but also needs to be judged according to the results of the examination. Immunohistochemistry refers to immunohistochemistry technology or immunocytochemistry technology, which is one of the more commonly used clinical pathology examination items, and can be used as one of the bases for clarifying the nature of the tumor. Immunohistochemistry has two main clinical uses: diagnostic and therapeutic. One use is to assist in determining the benign or malignant nature of tumors and clarifying the origin of tumors when the clinic may encounter difficulties in diagnosis. The other use is to achieve better therapeutic effects, immunohistochemistry can be used to find therapeutic targets. Immunohistochemistry is done to further clarify the diagnosis, and does not indicate that the tumor is malignant. For patients who need to do immunohistochemistry, there is no need to be overly nervous, the doctor will judge the specific condition according to the results of the test, and the treatment can be in accordance with the doctor’s instructions.