Acid discharge and dust removal cover

The utility model provides an acid and dust removal cover, which belongs to the technical field of detection assistance and comprises a top plate, a door, a side plate, an exhaust pipeline and an induction device. The top plate, the side plate and the door form a cavity to prevent impurities such as dust from polluting a sample solution; an included angle is formed between the top plate and the horizontal plane, so that acid gas can be gathered towards the air draft pipeline, condensed water gathered at the upper part can flow to the lower end of the top plate, and the condensed water is prevented from dropping into a sample solution from the upper part to cause pollution; the sensing device can sense that an experimenter gets close to or away from the dust removal cover, and then the door is automatically opened or closed, so that the experimenter is prevented from touching the door to pollute hands and further pollute a sample solution; the convex beams enlarge the space of the top, so that more acid gas is