The invention discloses a movable relaying protective experimental device. The device includes a box body, the four corners of the bottom of the box body are provided with veering wheels, an opening of the top of the box body is provided with a box cover, after the box cover is closed, the upper surface of the box cover is an experimental platform, and a storage chamber for placing communal experimental supplies and experimental attachments is arranged in the box body; the lateral surface of the box body is provided with an upper circular hollow part and a lower circular hollow part from top to bottom in sequence, a storage coil disc and a power source disc are installed in the box body from top to bottom in sequence, and an insertion panel of the storage coil disc is positioned in the upper circular hollow part; multiple testing lines are wound around the storage coil disc, multiple testing line insertion holes are formed correspondingly to each testing line in the insertion panel, and a power line is wound around the power source disc; through arrangement of the storage chamber, the storage coil disc and the power source disc in the box body, the movable relaying protective experimental device can achieve the effects that the communal experimental supplies and the experimental attachments can be carried anytime, secondary splicing of the testing lines is convenient, and the power line can be freely wound and unwound.