The severity of thyroid nodules 3*2*2.2mm needs to be judged according to the nature and location of the nodule, and usually cannot be generalized. Benign asymptomatic nodules are generally not serious and need to be observed and followed up, usually without medication; malignant nodules may be more serious and require surgical treatment. 1. Benign nodules: regular shape, clear boundary, uniform internal density, not rich in blood supply. The degree of calcification of the nodule is low without tiny calcification, and there are no obvious symptoms. 2. Malignant nodules: irregular morphology, unclear borders, uneven internal density, rich blood flow signals, generally require surgical treatment. It is recommended that patients with thyroid nodules go to regular hospitals in time, complete the relevant examinations under the guidance of the doctor and standardize the treatment, so as not to delay the condition.