The utility model relates to a horizontal compound mixed fertilizer granulating machine. A roller is arranged in a machine body, an eccentric shaft which is connected with a speed reducing mechanism is arranged in the roller and is connected with the roller, a plurality of circular holes are arranged on the roller, blanking pins pass through the circular holes and are absorbed on the eccentric shaft through a magnet, the number of the blanking pins is equal to the number of the circular holes, a feed pressing roller is arranged on an outer circle of the roller and is tightly contacted with the roller, when the roller is rotated by the eccentric shaft and the feed pressing roller is driven to rotate in an opposite direction, the blanking pins are rotated with the roller, and meanwhile, the blanking pins are driven by the eccentric shaft, and molding granule fertilizer is ejected out from the inner parts of the circular holes by the blanking pins. The energy consumption of the machine is low, powdery or granular materials can be used for producing multicomponent granule mixed fertilizer of high efficiency and good quality of any formula, the granulation rate is high, and granulation granules are even and tight.