Project cost budget box

The utility model discloses a construction cost budget box. Budget box, the budget box is divided into a quotation material cavity and a seat contraction cavity through a partition plate. The quotation material cavity is arranged above the seat contraction cavity; a groove is formed in the upper side wall of the budget box; a telescopic hole communicated with the groove is formed in the lower sidewall of the groove; telescopic rods are fixedly arranged in the telescopic holes; the upper end of the telescopic rod is fixedly connected with a budget plate; the side wall of the budget board is provided with a tool cavity and a calculation box placement cavity. A tool box is arranged in the tool cavity; a calculation box is arranged in the calculation box containing cavity, the tool box and the lower side wall of the calculation box are in rolling connection with the budget plate through first rolling wheels, a seat is arranged in the seat contraction cavity and penetrates through the sidewall of one side of the b