The invention relates to a motor manufacturing method and a motor. The motor comprises a cylindrical stator core and a coil. The stator core is internally provided with a containing cavity. The motormanufacturing method comprises the following steps of placing the coil in the containing cavity so as to enable the coil to form a containing part contained in the containing cavity and an extending part configured to extend out of the containing cavity from the two sides of the stator iron core in the axial direction of the stator iron core; and an extending part pouring and sealing die arrangedon the outer side of the extending part in a sleeved mode and provided with an inner cavity. A containing part pouring and sealing die provided with an inner cavity is arranged in the containing cavity in a sleeved mode. The containing part is contained in the containing part pouring and sealing die. The pouring and sealing fluid is poured into the interior of the containing part pouring and sealing die and the interior of the extending part pouring and sealing die. When the pouring and sealing fluid is solidified, the containing part pouring and sealing die and the extending part pouring andsealing die are disassembled. The motor manufactured by the method is relatively high in reliability.