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The concept of enhanced recovery after surgery (ERAS) has already been accepted by almost all the clinicians and nurses, the practice of which is based on interdisciplinary cooperation. The reason is still unclear why the effect of ERAS varies a lot though the same ERAS scheme is used. The main cause may be the same ERAS scheme can not be suitable for different patients. In other words, does ERAS also need to conform to Precision Medicine Theory? This study is focused on the necessity and clinical efficacy of "Precision ERAS" performed in lung cancer patients. The conclusions are the following: first of all, an accurate judgment of patients who need ERAS should be done properly before surgery, which means that the high risks assessment should be done accurately. Secondly, a specific ERAS scheme should be carried out in each independent patient who has obvious clinical symptoms in order to alleviate clinical symptoms and improve the ptients' quality of life (QOL). Thirdly, for the asymptomatic patitents who also don't have severe concomitant diseases, process-optimized ERAS should be selected to make patients feel more comfortable and shorten the average length of stay (ALOS). To summary, "subtraction" instead of "addition" should be considered when performing ERAS.