A toxic gas exposure preventing apparatus for dissection practice room thatrealizes not only attaining of satisfactory toxic gas exposure preventing effectwithout detriment to operating easiness but also employing of existing dissectiontables as they are without the need to execute work, such as installing of ventilationduct. Each of multiple dissection tables installed in a dissection practiceroom is provided with, independently from the dissection table, push hood (1)equipped with uniform air stream out-blowing means and pull hood (2) equippedwith suction emitting means so that at least portion of the uniform air streamflows in contact with the body donation laid on the dissection table and thereafteris sucked into the pull hood (2). The pull hood (2) has a built-in filter with toxicgas adsorbing capacity.
