Objective To understand the cognition and demand for dietary nutrition of lung cancer patients during chemotherapy,and to provide scientific basis for carrying out effective nutrition and health education.Methods Using the phenomenological method in the qualitative research,through semi-structured in-depth interviews,the data of fourteen patients with lung cancer chemotherapy were collected,and the Colaizzi content analysis method was used to analyze and summarize the topics.Results Three themes were summarized through interviews,namely,patients with lung cancer chemotherapy lack correct nutri...