Background: The occurrence of radiation pneumonia not only affects the efficacy of radiotherapy, but also seriously threatens the health of patients undergoing radiotherapy for lung cancer. Studies have suggested that a feining granule is a potentially effective drug for the treatment of radiation pneumonitis, but its mechanism and main components are still unclear. Our study used bioinformatics methods to analyze the main drug Aster tataricus L. f. in feining granules and aims to gain the...