The invention provides a control device of a jacquard machine, belonging to the technical field of electronics. The control device solves the problems that a jacquard machine in the prior art is controlled by a computer, an interface circuit is overlong and thus the disturbance is strong. The control device provided by the invention comprises at least one electromagnetic needle, a read-write module, a storage device and a microprocessor, wherein the output end of the read-write module is connected with the input end of the storage device, the input end of the microprocessor is connected with the output end of the storage device, the output end of the microprocessor is connected with a driving circuit for driving the electromagnetic needle to move up and down, the driving circuit is connected with the electromagnetic needle, and the microprocessor is used for receiving a jacquard machine pattern program output by the storage device, processing the jacquard machine pattern program, and outputting a control signal matched with the jacquard machine pattern program output by the storage device to the driving circuit to control the electromagnetic needle to do a weaving operation. The control device of the jacquard machine is not controlled by the computer and the disturbance caused by overlong interface circuit is avoided.