The utility model relates to a medicine tank bottom cover structure, which is used as a tank bottom of a medicine tank. The medicine tank bottom cover structure comprises: a cover body having a plurality of through holes; and a plurality of protrusions arranged at One side of the cover. The can bottom structure further includes a non-woven fabric hooked on the plurality of protrusions and covering the plurality of openings. The non-woven fabric is arranged in a hooking manner to avoid rusting of the cover body region covered by the non-woven fabric, so as to improve the disadvantage that the non-woven fabric of the conventional chemical can bottom cover is affixed and rusted.本創作為一種藥劑罐底蓋結構,係用作一藥劑罐之罐底,該藥劑罐底蓋結構係包括:一蓋體,具有複數個貫穿之開孔;以及複數個突出部,係設置於該蓋體之一側面。該藥劑罐底蓋結構更包括一不織布,該不織布係勾設於該複數個突出部,並遮蓋該複數個開孔。該不織布以勾設方式設置可避免該不織布所覆蓋之蓋體區域生鏽,以改善習知藥劑罐底蓋之不織布以黏貼方式設置而易生鏽之缺點。