Oral squamous cell carcinoma (OSCC) is the most common form of head and neck squamous cell carcinoma (HNSCC), and its incidence has been on the rise worldwide in recent years. Although the prognosis is good in the early stage, it is mostly in the localized or advanced stage when diagnosed. Although the prognosis is good in early stage, it is mostly localized in advanced stage when diagnosed. Treatment is mostly surgical resection as the preferred method, but due to the presence of subclinical metastases, tumor cells can never be completely eliminated, and even after radical resection, patients are still at risk of tumor recurrence. Immune response and inflammatory response play an important role in tumor development and progression, and studies have shown that the number of certain inflammatory cells and their ratios in the peripheral blood are important prognostic factors for malignant tumors, such as platelets, neutrophils, lymphocytes, monocytes, and so on. In this paper, we present the results of the peripheral blood platelet-to-lymphocyte ratio (PLR), neutrophil-to-lymphocyte ratio (NLR), systemic immune-inflammation index (SII), and the number of inflammatory cells in the peripheral blood. NLR, neutrophil-to-lymphocyte ratio (NLR), systemic immune-inflammation index (SII), and lymphocyte-tomonocyte ratio (LMR) in OSCC, with the aim of providing a more comprehensive reference for the comprehensive diagnosis and treatment of OSCC.