An oil-free energy-saving vacuum pump specially developed for pulp molding. Through the humanized design concept, the two-stage direct-connected host adopts the intelligent permanent magnet double-drive stepless speed regulation control system. While ensuring the vacuum stability system and the temperature constant temperature control of the overall operating parts, the comprehensive energy saving is about 35-55%, which is suitable for the user to greatly improve the production efficiency, thus saving a lot of energy costs.