Multiple nodules in both lungs may not necessarily be cancer, but may also be benign lesions. The key depends on the size of the nodules and the results of CT and pathological diagnosis, according to which these test results can be identified. Multiple nodules in both lungs depend on the conditions under which they are found. If there is a history of cancer in the past and multiple nodules in the lungs are newly developed, this should be taken seriously as it may be a metastatic lesion and must be strictly reviewed. If there is no previous history of cancer and the nodules are found during physical examination, regular review or review after anti-inflammatory treatment is recommended if the nodules are relatively small; if the nodules are relatively large, it is necessary to perform a puncture to clarify the diagnosis. There are many causes of multiple nodules in both lungs, commonly due to infections, tuberculosis, sarcoidosis, tumors and other diseases, and clinical reliance on ancillary tests to make a clear diagnosis, multiple nodules should be taken seriously no matter what. The lungs of normal people are not nodules, multiple nodules in the lungs, according to the size, the location found, etc., the appropriate examination, a clear diagnosis, in order to target treatment, of course, do not worry too much, and actively face the causes of benign lesions are also many.