The invention discloses a warm-keeping layer processing technology of mountaineering snow boots. The warm-keeping layer processing technology comprises the following steps that firstly, a base is horizontally placed on the ground, then a shoe tree matched with a leather shoe to be processed is selected, the shoe tree is connected with a second supporting rod, the leather shoe to be processed sleeves the shoe tree, an operator sits on a stool to process the leather shoe, the direction of the leather shoe is adjusted through a rotary element in the processing process, convenience is brought to auser for processing of different parts of the leather shoe, meanwhile when the height of the leather shoe needs to be increased, a pedal is treaded with the foot, the pedal forces a movable plate torotate around a movable element so as to push a first supporting rod to move up, and leather shoe height adjustment is achieved. The warm-keeping layer processing technology can adjust the height of the shoe tree, meanwhile can freely turn the shoe tree, facilitates well shoe processing performed by the operator and improves the processing efficiency.