The utility model discloses a box hydraulically operated fixture, bottom plate one side is equipped with first corner jar bed hedgehopping piece and second corner jar bed hedgehopping piece and third corner jar bed hedgehopping piece respectively, first corner jar bed hedgehopping piece top is equipped with first corner jar, bottom plate opposite side department is equipped with the inclined plane mounting panel, be equipped with fourth corner jar and the 5th corner jar on the inclined plane of this inclined plane mounting panel, the bottom plate department of first corner jar bed hedgehopping piece one side is equipped with first locating piece, the bottom department of second corner jar bed hedgehopping piece one side is equipped with the second locating piece, the bottom department of third corner jar bed hedgehopping piece one side is equipped with the third locating piece. Its advantage lies in: (1 )Think about that ingenious, implementation expense is low, maintenance is with low costs, (2 )Fix a position accurately, operating condition is stable, (3 )Adopt 3 adjustable installation structures that press from both sides, the simple operation, control accuracy is high.