The invention discloses a front panel of a transformer coil casting die and a fabrication method thereof. The front panel of the transformer coil casting die comprises a base plate, a plurality of side plates and a wiring post casting die, wherein the plurality of side plates encircles the base plate, two adjacent side plates are connected, the base plate is provided with an installation hole communicated with an inner cavity of the coil casting die, the wiring post casting die is fixed in the installation hole and provided with a casting opening communicated with the inner cavity of the coil casting die, and the side plates are provided with fixed holes. By the front panel, each plate is unnecessarily processed such as turning, milling and the like, an appropriate-thickness plate is only selected to be processed, the fabrication process is simplified, moreover, an expensive steel channel is prevented from being used as a raw material, quality requirement can be reached by adopting an ordinary steel plate which has high strength and is difficult to get rusty, and fabrication cost is effectively reduced.