The invention discloses air purifying and ventilating equipment for a mine. The air purifying and ventilating equipment comprises a ventilating cylinder. Air suction blades are connected with the right side outside a rotating shaft in a sleeving mode; a spraying pipe is arranged on the upper side of the middle of an inner cavity of the ventilating cylinder; spraying heads are connected to the bottom of the spraying pipe with equal distances; the top of a branch pipe is connected with a water tank; an inner cavity of a water collecting cylinder is connected with a sand filtering plate; the right side of the water collecting cylinder communicates with a sand discharging pipe; a water suction pump is arranged on the left side of the bottom of the inner cavity of the water collecting cylinder; an outlet of the water suction pump is connected with a bent pipe; the two sides of a water collecting plate are both connected with baffles; ventilating grooves are formed in the inner sides of the baffles with equal distances; one sides of the baffles are connected with water retaining teeth with equal distances; and the bottom of a mounting plate is connected with electric heating pipes with equal distances. The air purifying and ventilating equipment has the advantage that when the mine is ventilated, the influence of dust on the air quality in the mine can be prevented, and the problem that the practicability of the ventilating device is influenced by spattering of the dust during ventilating is solved.