Pneumonic nodules are determined by the fact that the patient may have symptoms of acute infection, and the patient may have fever, cough, sputum, and peripheral body aches and pains. Then the blood test, C-reactive protein, calcitoninogen or other related inflammatory indexes will be elevated, and the imaging test is that CT can see a single round solid or ground glass-like change. There are also multiple widely distributed small nodules, the size of which varies greatly from 1-10mm, and the edges of the lesions are blurred. However, special types of nodules caused by hematogenous tuberculosis or fungal disease, with nodules <5mm and corn-like changes, can be absorbed by anti-inflammatory or anti-tuberculosis treatments.