The invention relates to a processing method for low-crotonaldehyde-release cut stems. The tobacco stems are used as raw materials. The processing method comprises the following steps of 1) water extraction: the water is used to extract the tobacco stems, after finishing extracting, the extracting solution and the remaining stems are obtained through solid-liquid separation; 2) extraction solution fermentation: after the extracting solution is concentrated, the yeast is added to perform fermentation treatment; 3) rolling and cutting for the remaining stems: a stem rolling machine is used to roll the remaining stems into the rolled stems, and then the tobacco cutting machine is used to cut the rolled stems into cut stems; 4) returning material: returning the extracting solution after being fermented and treated into the cut stems obtained from step 3); and 5) dehydration: the product cut stems is acquired through dehydration. After the preparation of the processing method, the tobacco stems are made into cut stems, the burst size of crotonaldehyde is significantly reduced. When the cut stems are blended into the formula of cigarettes, the burst size of crotonaldehyde can be decreased.