The invention discloses a novel paint preparing mixing device. The novel paint preparing mixing device comprises a bottom plate; the right side of the top of the bottom plate is fixedly connected witha rotation motor through a motor base; the output shaft of the rotation motor is fixedly connected with a first belt pulley; the surface of the first belt pulley is connected with a second belt pulley through a belt in transmission manner; the shaft center of the second belt pulley is connected with a circular rotating disc through a rotating shaft in rotating connection; the top of the bottom plate on the left side of the rotation motor is fixedly connected with a support plate; one end of the rotating shaft is connected with the front surface of the support plate in rotating connection. Theinvention belongs to the technical field of paint preparation device. The novel paint preparing mixing device is capable of solving a problem in the prior art that artificial mixing of paint ingredients using a mixing device is always uncomplete, paint production failure caused by uncomplete mixing is avoided, labor intensity of workers is reduced effectively, and product qualified rate is increased greatly.