Adenoid cystic carcinoma of the parotid gland is a kind of malignant tumor originated from glands and usually occurs in parotid gland, submandibular gland and sublingual gland, which belongs to malignant tumors with high incidence rate. The incidence of adenoid cystic carcinoma is highest in the sublingual gland and the minor salivary gland, followed by the submandibular gland, and lowest in the parotid gland. Adenoid cystic carcinoma usually grows along fibrous tissues such as nerves, blood vessels or muscle fibers. In the early stage, it may cause pain and nerve paralysis, and with the development of the disease, it may also metastasize to distant places, and the more common directions of metastasis are the lungs and bones. The treatment of adenoid cystic carcinoma of parotid gland is mainly based on surgical resection. During the treatment, patients should pay attention to check the metabolic status of lungs and bones, and observe whether there is any blood metastasis during the evaluation process before surgery, and then carry out targeted treatment in time to avoid worsening the symptoms and causing serious adverse effects.