Field connecting structure for connecting service valve and drain valve

The utility model discloses a connecting structure for connecting a service valve and a drain valve in a field. Protective housing, one side of the protective shell is connected with a second spring piece in a screwed mode through a screw. The end of the second spring piece is connected with a first spring piece in a screwed mode through a screw, a second protection plate is installed at the end of the first spring piece, and the second protection plate is elastically connected with the protection shell through the first spring piece and the second spring piece. A first protection plate and asecond protection plate are designed on the two sides of the protection shell; the problem that the outer surface is inconvenient to protect when the upper surface of the ground is pressed sometimes is avoided; the connecting structure is easy to damage due to frequent treading, during treading, one side of the protective shell can be protected by the second protective plate under the action of elastic deformation of the