A household insecticide effervescent tablet is provided, particularly relating to a household insecticide effervescent tablet that contains imidacloprid and a preparation method thereof. The disclosed household insecticide effervescent tablet containing imidacloprid provides advantages including a convenient insecticide application, a quick and exact drug efficacy, low residue, non-pollutant environmental pollution, and a very convenient and simple way to transport and store.本發明提供一種家用殺蟲劑發泡錠,尤其是一種含有益達胺(imidacloprid)之家用殺蟲劑發泡錠,以及其製備方法。本發明所揭露之該含有益達胺之家用殺蟲劑發泡錠不僅施用時操作簡便、藥效迅速確實、殘留量低、不易造成周遭環境汙染,而且運輸、儲存非常方便簡易。