Milk choking prevention structure and device

The invention belongs to the technical field of infant products, and particularly relates to a milk choking prevention structure and device.The milk choking prevention structure comprises a first inner tube and a first outer tube, a first cavity structure is formed between the first inner tube and the first outer tube, and the top end of the first cavity structure is closed; a plurality of first vent holes are formed in the pipe wall of the first outer pipe, and a plurality of second vent holes are formed in the bottom of the first cavity structure; comprising a second inner pipe and a second outer pipe, a second cavity structure is formed between the second inner pipe and the second outer pipe, the top of the second cavity structure is open, and the bottom of the second cavity structure is closed; a plurality of third vent holes are formed in the pipe wall of the second inner pipe, and the third vent holes communicate with air inlet pipes; external atmosphere enters the first cavity structure through the fir