The invention relates to a combined double-opening type calcium carbide pan vehicle for calcium carbide production, comprising a calcium carbide pan, a railway vehicle and two parallel rails, wherein the side wall of the calcium carbide pan comprises ten fixing side plates, the pan bottom comprises three baseboards, two movable side plates are respectively arranged on the upper parts of two symmetrical side plates of the side wall, outer sides of two movable side plates are sequentially and respectively connected with connecting rods, curved bars and adjustable connecting rods, the lower ends of the adjustable connecting rods at two sides are respectively connected with two ends of a guide-wheel shaft, an opening-closing guide wheel is arranged in the middle of the guide-wheel shaft, and an opening-closing guide rail is arranged between the two parallel rails. The calcium carbide pan is designed to be integrated with the rail vehicle, and a wedge plate of the calcium carbide pan adopts two movable side plates to realize automatic opening and closing so as to reduce labor intensity, enhance work environment and raise production efficiency; and the calcium carbide pan takes the shape of a combined rectangle frustum, thus eliminating stress generated by heat expansion, facilitating maintenance, prolonging service life of pan body, reducing manufacturing cost and enhancing production efficiency.