The invention discloses an environment-friendly type bast fiber film preparation device, which comprises two feeding machines, a feed mixer, a crude opening machine, a fine opening machine, a vibrating air pressure bast feeding box, a carding machine, a mechanical cross lapper, an air-lay machine, an impregnator, a drying can type pre-drying pit, an air-pressure double-roller planishing mill, a surface spraying coating machine, a drying can type dying setting machine, a drafting side cut lap former and the other operation unit machines. Each unit-air conditioning adopts variable-frequency control and a synchronizer to control electric appliances, and each unit-air conditioning can be singly operated in high speed, and can be interlocked to operate with complete equipment. The invention has the advantages that fibrilia is delivered by an airflow pipeline on the crude opening machine, and between the crude opening machine and the carding machine, and the supply of raw material is continuous, net is combined in two times through a machine to pave net and airflow to form net, bast fiber film net has little density, even strength and stable quality, even coating layers are coated and sprayed on double faces of bast fiber film, and bast fiber film with different functions and usages can be made, continuous and stable full-automatic production of bast fiber film can be achieved.