The invention discloses a manufacturing method of a badminton racket. The method mainly includes steps of immersing a carbon fiber yarn beam in epoxy resin solution; weaving to be a carbon fabric cloth through a weaving machine and statically placing; shearing the carbon fabric cloth, and packing at outside of a nylon wind pipe and reaching a certain diameter; taking out and cooling the packaged carbon fiber after thermally pressing and shaping, and obtaining an initial blank of the badminton racket; detecting the appearance and intensity of the badminton racket; boring a wiring hole on the initial blank; grinding the surface of the initial blank; coating the surface of the initial blank; beating a linear eye grain by a punch press, and cutting lines tidily, and obtaining a finished product of the badminton racket; weighing and adjusting weight so that the badminton racket meets the standard weight, and adjusting the balance point thereof to make the badminton racket stress in balance; package the qualified badminton racket and delivery to sell. The manufacturing method has the advantages that the badminton racket is prepared by the carbon fiber, badminton racket is light in quality and convenient to use; moreover, the carbon fiber material is better in intensity and durable; besides, the badminton racket can play very good damping effect in use.