The subject innovation relates to a sample metering device that is capable of weighing by that, more specifically, the amount necessary for two or more different samples, each of the wide sample metering apparatus to inject the reaction tank. Wide sample metering device according to the present invention is, with the upper mounting block is two or more sample path for introducing the two or more samples formed through; The upper mounting block is disposed below a certain distance spaced from the lower mounting block and a sample discharge passage formed through for discharging the sample injected through the sample path of the upper mounting block and downwardly; Side plates that hold interconnecting the upper mounting block and a lower mounting block at one end and; Doedoe provided between the upper mounting block and a lower mounting block, and the upper surface is in contact with the upper surface of the top when being in contact with the lower face of the mounting block includes a lower mounting block can be slid in a horizontal direction between an upper mounting block and a lower mounting block, the center of the metering tube, the sample discharge passage of the through-vertically, in accordance with the sliding movement the horizontal direction, and when supplied a specific sample temporarily stored as a particular sample path and the metering tube of the upper mounting block in communication, by again sliding the lower mounting block and a movement block of the metering tube is temporarily stored as the communication path to the metering tube of the sample via the sample discharge passage of the lower mounting block outlet into the reaction vessel having the bottom and outwardly; Possible reverse rotation motor; Is driven by said motor and a linear transfer mechanism which moves the slide block moves in a horizontal direction.