The invention relates to a raw material mixing device, in particular to a raw material mixing device for ink making and aims to provide a raw material mixing device simple to operate and even in mixing and used for ink making. For solving the technical problem, the raw material mixing device for ink making comprises a mounting rack, a first slide rail, a first slide block, a first wedge block, a first spring, a fixed pulley, a second slide rail, a second slide block, a pedal plate, a first pull line and the like. The first slide rail is arranged on the left side of the bottom in the mounting rack, the first slide block is connected to the first slide rail in a sliding mode, and the first wedge block is arranged at the top of the first slide block. The raw materials in a first frame body and a second frame body are pressed into a mixing frame by treading the pedal plate and then are mixed in the mixing frame, so that the amount of the mixed raw materials is better to control in the mixing process.