The invention relates to a
plant fiber filter element forming device of an engine
oil filter and a using method thereof. The device comprises a
workbench, a rotary base is installed on the left portion of the
workbench, an outer cylinder is installed on the rotary base, an inner cylinder is installed on the portion, located in the outer cylinder, of the rotary base, and a supporting base is installed on the right portion of the
workbench. A conveying belt is installed on the supporting base, the end, close to the outer
barrel, of the conveying belt is in
butt joint with the outer
barrel, a supporting rod is installed on the workbench, a connecting block is fixed to the supporting rod, a telescopic air cylinder is installed on the connecting block, and a pressing
barrel is fixed to the lower end of a push rod of the telescopic air cylinder. An annular space formed between the inner barrel and the outer barrel is located under the cross section of the side edge of the pressing barrel. Automatic
extrusion forming of the
plant fiber material is achieved, manpower is saved, compared with manual production, the production efficiency is greatly improved, the capacity can be increased, andthe enterprise income is increased.