Air-permeable backpack with waterproof function

The utility model discloses an air-permeable backpack with a waterproof function. The air-permeable backpack is characterized by being formed by combining a waterproof lining layer, an interlining layer, a buffer layer, a ventilating outer layer, wherein the waterproof lining layer is located at the innermost layer, the interlining layer is arranged on the waterproof lining layer, the buffer layer is arranged on the interlining layer, the ventilating outer layer is arranged on the buffer layer, the surface of the ventilating outer layer at the back of a backpack body is provided with a plurality of protruding contacts, and a dampproof bag is arranged in the backpack body. The air-permeable backpack disclosed by the utility model has the characteristics of novel structure, practicability, air permeability and god waterproof and damproof properties, and a certain air convection space can be preserved between the backpack and the back of a human body.