Fuente: WIPO Food Portada The invention discloses a user diet safety warning system which comprises a mobile terminal, the mobile terminal comprises an input module and an ordering module, the input module is used for inputting names of food materials, the ordering module is used for ordering food, the input module comprises a forbidden food material input module, and the forbidden food material input module is used for inputting the names of the food materials. The ordering module comprises a food material selection module, a checkout module and an alternative food material reminding module, and the alternative food material input module comprises a common allergic food material selection module, a disease alternative food material selection module and a food material search module; the common allergic food material selection module is used for selecting and recording common allergic food materials; the disease forbidden food material selection module is used for selecting and recording forbidden food materials during diseases; and the food material searching module is used for carrying out character input searching on the required food materials.