Underground cleaning type pressure control and release system and method

The invention discloses an underground cleaning type pressure control release system and method, and the system comprises a release ball, a releaser sealing cylinder, a releaser jacket and an upper suspension nipple which are sequentially arranged from inside to outside; the hanging short section is connected with the upper short section and is connected to the lower surface of the upper short section; the releaser sealing cylinder is connected with the upper hanging short section through the releaser outer sleeve and the releaser elastic claw, the releasing shear pin penetrates through the upper portion of the releaser outer sleeve to be connected with the upper portion of the releaser sealing cylinder, and the releaser elastic claw is arranged between the lower portion of the releaser outer sleeve and the releaser sealing cylinder. The problems that during complex horizontal well logging construction, an instrument is prone to being damaged, and an instrument string cannot be conveyed to a target layer are