The invention discloses an efficient tea leaf de-enzyming machine with a humidifying device. The de-enzyming machine comprises a de-enzyming cylinder, an inner cylinder and an outer cylinder. The de-enzyming cylinder is of a double-layer structure and comprises the inner cylinder and the outer cylinder. The inner cylinder and the outer cylinder are coaxially arranged, an electric heating layer is arranged between the inner cylinder and the outer cylinder, a feeding hopper is connected with the left end of the upper side of the inner cylinder, the left end of the inner cylinder is connected with a drive motor through a rotary shaft, and the rotary shaft is horizontally arranged in the center of the interior of the inner cylinder. According to the efficient tea leaf de-enzyming machine with the humidifying device, the inner cylinder and the rotary shaft rotate in opposite directions, and tea leaves in the inner cylinder are stirred and overturned. Meanwhile, the electric heating layer and hot air are matched to de-enzyme the tea leaves, the tea leaves are fully and evenly heated, the de-enzyming effect is good, efficiency is high, the tea leaves attached to the inner wall of the inner cylinder can be scraped off, and waste of raw materials is avoided. Besides, the tea leaves can be humidified, the situation that quality is affected because the tea leaves are excessively dehydrated is avoided, effective shock absorption can be achieved through a shock-absorbing spring and a shock-absorbing pad, noise is lowered, and the service life of the de-enzyming machine is also prolonged.