Collecting swab convenient to take and use

The collection swab comprises a sleeve, an inner cavity of the sleeve is connected with a connecting pipe in a sliding mode, and the side wall of the connecting pipe is fixedly connected with a connecting ring. According to the collecting swab convenient to take and use, the sleeve is pushed into genital tracts of cattle and sheep, then the connecting pipe is pushed to the bottom of the sleeve, after the connecting pipe reaches an undetermined position, an extrusion column is extruded to the bottom of the connecting pipe, and at the moment, the extrusion column moves to the bottom of an inner cavity of the connecting pipe; the extrusion column pushes the extrusion block to move towards the outer side of the connecting pipe, so that the sliding column extends out of the outer side of the connecting pipe, meanwhile, a second spring located between the extrusion block and the inner wall of the connecting pipe is extruded, when the sliding column extends out of the outer side of the connecting pipe, a sleeve is r