The invention discloses a manufacturing method for a fan-shaped plate forge piece for an economical type coiling machine reel, and belongs to the technical field of metallurgical mechanical manufacturing. The manufacturing method comprises the following steps of: pouring molten steel which is subjected to converter smelting, LF furnace refining and VD vacuum degassing into a continuous casting round billet; carrying out cracking off, cutting and slow cooling after unloading, putting the round billet into a fuel gas heating furnace to heat, carrying out forging after discharging, carrying out upsetting by using an upper flat anvil and a large platform for the first heating number of forging, , carrying out forging for drawing out by using the upper flat anvil and a lower V-shaped anvil forthe second heating number of forging, carrying out forging to obtain a fan shape by using an upper arc-shaped anvil and a small platform for the third heating number, finishing and straightening the two end surfaces of the fan-shaped plate by using the upper flat anvil and the small platform, continuously forging the round billet until a fan-shaped dimension of a process design, carrying out annealing, and adopting an ultrasonic flaw detector to perform nondestructive flaw detection, thereby manufacturing a finished product. The manufacturing method reduces the fan-shaped plate raw material input and the forge piece blank process weight, realizes flexible production for a single part and multiple parts, shortens the machining period, and reduces the manufacturing cost of the fan-shaped plate forge piece.