The invention relates to a filter element which comprises an outer sleeve, an inner sleeve, a stainless steel sealing plate and a filter screen, wherein the inner sleeve is used as a support frame of the filter screen, the filter screen is connected onto the inner sleeve in a sleeving manner, the outer sleeve is connected onto the filter screen in a sleeving manner for tightly pressing the filter screen, the outer sleeve is connected with the inner sleeve through welding, the stainless steel sealing plate is welded at one side of the outer sleeve, welding grooves are formed in the outer sleeve, inner sleeve and the stainless steel sealing plate, so as to facilitate welding and splicing, and the filter screen adopts a 50-mesh double-layer stainless steel filter screen. The filter element provided by the invention is wholly made of a stainless steel material, the filter screen is fixed through the outer sleeve and the inner sleeve, the stainless steel sealing plate is adopted at the bottom of the filter element for blocking and welding is applied, so that the whole pressure resistance of the filter element is improved, and the filter element has the advantages that the structure is simple and reliable, the processing is simple, the manufacturing cost is low, the use and replacement are convenient, the service life is long, the storage is convenient and the like, and is easy to popularize.