Underground water sampling and taking control device

The invention discloses an underground water sampling and taking control device which comprises a sampling mechanism arranged at the bottom end of a lifting rod, the sampling mechanism comprises a first vertical rod, a second vertical rod, an adjusting groove, a plurality of sliding seats, a plurality of annular locks and a sampling container, and the first vertical rod and the second vertical rod are arranged at the lower end of the lifting rod at intervals; adjusting grooves are formed in the side faces of the first vertical rods. A plurality of sliding seats are embedded in the adjusting groove in a sliding manner, a rotating rod is hinged to each sliding seat, and a gravity ball is fixedly arranged at the far end of each rotating rod; the second vertical rod is sleeved with the multiple annular locks, and a rotating shaft is arranged on the side face of each annular lock; each sampling container comprises a corrugated pipe, a base arranged at the bottom end of the corrugated pipe and an upper cover arrang