Small nodules in the lungs usually do not matter. Small nodules in the lungs are more common, usually due to inflammation of the lungs, but the possibility of malignant tumors cannot be ruled out, so it is important to review the concern regularly. Small nodules in the lungs are generally not a big problem if they are less than one centimeter, but if they are larger than one centimeter, there may be some problems, specifically, you can go to the hospital to perform chest enhancement CT, PET-CT or puncture biopsy to rule out malignant tumors. Most of the nodules in the lungs are benign and usually have no special symptoms, so they can be reviewed regularly. However, small nodules in the lungs do not exclude the possibility of malignant changes, so tumor marker tests can be done first, and if the results are normal, they need to continue to be observed and can be rechecked after six months. After the lungs have small nodules on the lung maintenance work is very important, go out can wear a mask, avoid staying in places with more dust, usually you can eat more pears to play a role in moistening the lungs.