Disclosed is a switchable contraceptive device and a contraceptive method thereof, wherein the contraceptive device comprises a sealed switch body (2) being provided with a channel (7) for a medium passing through and an opening and closing piece (4) for blocking the medium or passing same through the channel (7) inside and also being provided with a holding chamber (5) matching with the opening and closing piece (4) inside, with the opening and closing piece (4) being movably mounted in the holding chamber (5) in a tight-fitting manner a drive part (1) for driving the opening and closing piece (4) is provided outside the sealed switch body (2), with the drive part (1) being connected to the opening and closing piece (4) connecting pipes (3) extending outwardly are provided at both ends of the channel (7), with the outer ends of the connecting pipes (3) being respectively sealingly connected to both ends of the oviduct or the spermaduct and when an external force drives the drive part (1), the drive part (1) drives the opening and closing piece (4) to move to block or communicate the channel (7). When using the contraceptive device, it can not only achieve a safe and effective contraceptive purpose, but also does not affect the sense of the physical organ while in use.Linvention concerne un dispositif contraceptif commutable et un procédé contraceptif correspondant, où le dispositif contraceptif comprend un corps de commutation scellé (2) pourvu dun canal (7) pour un milieu passant à travers et une pièce douverture et fermeture (4) pour bloquer le milieu ou permettre le passage du milieu à travers le canal (7) à lintérieur et étant aussi équipé dune chambre de support (5) correspondant avec la pièce douverture et de fermeture (4) à lintérieur, la pièce douverture et de fermeture (4) étant montée de manière mobile dans la chambre de support (5) dune manière hermétique une partie dentraînement (4) pour entraîner la pièce douverture et de fermeture (4) est fournie en d
