Sampling mechanism and soil humidity detector

The utility model relates to the field of soil detection, and particularly discloses a sampling mechanism and a soil humidity detector, the sampling mechanism comprises a sampling barrel, the upper end part of the sampling barrel is closed and is provided with a through hole, and the side wall of one end of the sampling barrel is fixedly connected with a connecting rod; the push plate is located in the sampling barrel, the side wall of the outer end of the push plate is slidably connected with the inner wall of the sampling barrel, the upper end of the push plate is fixedly connected with a moving rod, and the upper end of the moving rod slidably penetrates through the through hole and is fixedly connected with a pedal; the pedal rod is fixedly connected to the outer wall of one side of the upper end of the sampling barrel, the lower end of the connecting rod is fixedly connected to the upper end of the inserting rod through a bolt, and after the sampling barrel is placed at a position needing sampling by hol