Back frame with quick assembly structure and cushioning structure

The invention discloses a back frame with a quick assembly structure and a cushioning structure, which comprises a backrest structure with two opposite ends, wherein one end of the backrest structure is provided with at least one connecting position; a joint device jointed to the at least one connecting position of the backrest structure and used for connecting a backpack body; and a back shoulder belt group which comprises at least one back shoulder structure and a back shoulder rope belt, wherein at least one part of the back shoulder rope belt is arranged on the joint device through the back shoulder structure, and one part of the back shoulder rope belt is arranged at the other end of the backrest structure. The application of one frame with multiple bags meets the use of the backpack with various different targets, so that the back frame and the backpack body are greatly improved through the mass of the backpack with various different purposes, the back frame does not reduce the bearing mass of a user in