本揭露提供一種用於演示免疫學原理之組合式教具,其包括用於演示抗體之重鏈的長柱、用於演示抗體之輕鏈的短柱、用於演示病原或細胞之表面分子的嵌入件及用於演示病原或細胞的半球體基座。該半球體基座具有供該嵌入件插入的複數個插孔,且該嵌入件之頭部能與該長柱及該短柱彼此接合。本揭露另提供一種用於演示免疫學原理之電子裝置,其包括殼體,該殼體容設用於顯示該組合式教具之影像的顯示器、與該顯示器電性連接之記憶體及與該記憶體電性連接之處理器。本揭露可用於演示或學習抗體之結構以及抗原與抗體專一性結合之機制。The present disclosure provides an assembly teaching aid for demonstrating a principle of immunology. The assembly teaching aid includes a long column for demonstrating a heavy chain of an antibody, a short column for demonstrating a light chain of an antibody, an insert for demonstrating a surface molecule of a pathogen or a cell, and a hemispherical base for demonstrating the pathogen or the cell. The hemispherical base has a plurality of inserting holes for the insertion of the insert, and a head portion of the insert can be connected with the long column and the short column. The present disclosure further provides an electronic device for demonstrating a principle of immunology. The electronic includes a housing accommodating a display for displaying an image of the assembly teaching aid, a memory electrically connected with the display, and a processor electrically connected with the memory. The present disclosure can be used for demonstrating or learning the structure of antibodies and the mechanism of specific binding of antigens to antibodies.