Objective To construct a sensitive quality index system for nutrition management of elderly malignant lymphoma and provide an objective and reliable basis for evaluating the quality of clinical nutrition management. Methods The " structure - process- result " quality assessment model was used as the basis of system construction supplemented by American Hopkins evidence-based theory through literature search Delphi method and analytic hierarchy process were used to determine the sensitive quality indexes and weights of nutritional management of elderly malignant lymphoma. Results After 2 rounds of expert letter inquiries round 1 n = 28 round 2 n = 26 the effective questionnaire recovery rates were 92. 9% and 96. 2% respectively the expert authority coefficients were 0. 852 and 0. 865 and the Kendall coordination coefficients of expert opinions were 0387 and 0. 418 respectively. The difference was statistically significant P< 0. 05 . Finally a sensitive quality index system for elderly malignant lymphoma nutrition management was constructed including 3 first-level indicators 8 second-level indicators and 20 third-level indicators. Conclusion The sensitive quality index system of nutrition management for elderly malignant lymphoma is scientific reliable and practical which provides a basis for improving the quality of clinical nutrition management.