Micro-channel valve structure and nucleic acid detection device

The utility model provides a micro-channel valve structure and a nucleic acid detection device, and relates to the technical field of micro-channel valves. The micro-channel valve structure comprisesa bottom plate, a mounting seat, an air bag soft film, a base plate and an electromagnetic valve; the bottom plate mounting seat, the airbag soft film and the base plate are sequentially arranged fromtop to bottom; a first flow channel is formed in the lower surface of the bottom plate, a second flow channel is formed in the upper surface of the bottom plate, and a through hole used for communicating the first flow channel with the second flow channel is formed in the bottom plate. A sealing piece capable of blocking the through hole is arranged in the mounting base, the air bag soft film candrive the sealing piece to move up and down relative to the mounting base, a third flow channel communicated with an air source is formed in the base plate, compressed air in the third flow channel is used for driving the air