The disclosure relates to the field of medical instruments, and discloses a control device and method for a ventilation therapy equipment, and ventilation therapy equipment. The ventilation therapy equipment has multiple working modes. The control device includes an identification device used for identifying a type of an accessory of the ventilation therapy equipment; and a controller used for determining and controlling, according to the identified type of the accessory, the ventilation therapy equipment to switch to a working mode corresponding to the type of the accessory. The control device can automatically switch the corresponding working modes according to different types of accessories, and is more convenient and intelligent, so that a lot of time can be saved for a doctor and a patient.