The utility model discloses a fracturing downhole parameter monitoring device which comprises a three-component
geophone and a placing circular plate which are detachably connected in sequence from top to bottom. The supporting base is of an L-shaped structure, the side wall of the supporting base is connected with the well wall of the fractured well through bolts, and the middle of the bottom wall of the supporting base is connected with the containing circular plate through an automatic correction
assembly; the automatic correction
assembly comprises a ball sleeve, the upper end and the lower end of the ball sleeve are each of an
open structure, and the side wall of the ball sleeve is fixedly connected with the bottom wall of the supporting base through a connecting rod; the ball is rotatably arranged in the ball sleeve, the upper end of the ball is connected with the placing circular plate, the lower end of the ball is detachably connected with a
plumb bob, and the center of the placing circular plate, the center of the ball and the axis of the
plumb bob are collinear; by means of the characteristic that the placing circular plate, the ball and the
plumb bob are coaxially arranged, automatic horizontal correction is carried out on the placing circular plate supporting the three-component
geophone; therefore, the three-component
geophone calibration device can play a role in quickly calibrating the three-component geophone.