The invention discloses a method for detecting, grading and managing pulmonary nodules based on deep learning, which is characterized in that it includes the following steps: S100: collecting ultra-low-dose spiral CT thin-layer images of the chest, delineating the lung area in the CT image, and marking out All lung nodules in the lung area; S200: train the lung area segmentation network, suspected lung nodule detection network and lung nodule screening and grading network; S300: obtain the time series of lung nodules and their corresponding grading for all patients in the image set Information labeling, constructing a pulmonary nodule management database; S400: Training a lung cancer diagnosis network based on a three-dimensional convolutional neural network and a long-term short-term memory network. Based on deep learning, the present invention trains the lung region segmentation network, suspected pulmonary nodule detection network, pulmonary nodule screening and grading network and lung cancer diagnosis network, accurately detects pulmonary nodules, and combines follow-up follow-up to obtain more accurate diagnosis Information and Clinical Strategies.