Lunch box and lunch box assembly with medicine box

The utility model belongs to the technical field of articles for daily use, and discloses a lunch box and a lunch box assembly with a medicine box, the lunch box comprises a bottom-layer box, a middle-layer box and a top-layer box, the bottom-layer box comprises a supporting part and two bottom-layer box bodies, the two bottom-layer box bodies are respectively connected to two ends of the supporting part, the bottom-layer box bodies are provided with bottom-layer containing grooves, and the bottom-layer containing grooves are communicated with the middle-layer box. The middle-layer box can be stacked on the supporting part, a middle-layer containing groove is formed in the middle-layer box, the top-layer box comprises a communicating part and two top-layer box bodies, the two top-layer box bodies are connected to the two ends of the communicating part respectively, top-layer containing grooves are formed in the top-layer box bodies, and a communicating groove communicating the two top-layer containing grooves