The invention relates to a high-voltage motor stator coil end part splicing and shaping method, and belongs to the technical field of hydraulic generators. The high-voltage motor stator coil end part splicing and shaping method is characterized in that: the stator coil end splicing and shaping is carried out by a shaping and gelling mold; the shaping and gelling mold comprises an end mold, a linear weight, a check block, a linear frame, a flange lug, a flange, an end plate, a side plate, an end part weight, and a support plate; and the process of manufacturing the shaping and gelling mold comprises the following steps of: 1) splicing the linear frame according to an angular template; 2) making a cylindrical fixture according to the size of an R position at the corner of the end part of the stator coil, and heating and bending the side plate on the cylindrical fixture to meet the requirement of the size of the R angle on the end part; 3) welding the end plate and the side plate together to form the end part weight; and 4) in the process of assembling the end mold of the shaping and gelling mold, arranging the end part support plate. The method has the advantages that: the process is reliable, the parts are convenient to assemble, the assembly is time-saving and labor-saving, the insulation is not damaged, the motor is small, the assembly quality is high, the energy is saved, the consumption is reduced, the service life of the motor is prolonged, and the like.