A multipurpose wheel-washing apparatus, comprising: a wheel-washing unit including an upper frame provided with a plurality of rollers on which wheels of a vehicle are to be rotatably seated, and injection nozzles configured to inject high-pressure washing water onto the wheels seated on the rollers; and a lower frame provided with a water tank located below the upper frame so as to collect falling waste/turbid water; a water storage unit configured to store washing water to be supplied to the injection nozzles; a purification unit configured to receive and purify the waste/turbid water from the water tank and then send purified water to the water storage unit, characterised in that the multipurpose wheel-washing apparatus further comprises a blowing unit disposed on an exit side of the wheel-washing unit so as to blow air and provided with spray nozzles for selectively spraying water in a particulate form, whereby the blowing unit comprises: a blower fan having rotatable blades housed in the blower fan, the rotatable blades being driven by a motor, the blower fan being provided with the spray nozzles installed on a discharge port side of the blower fan; a support arm for vertically pivotably supporting the blower fan; a swing member configured to rotate the support arm so as to control a lateral swing angle of the blower fan; and a stretchable member having both ends connected to the blower fan and the support arm so as to control a vertical pivoting angle of the blower fan with respect to the support arm depending on extension and contraction of the stretchable member. a wheel-washing unit including an upper frame provided with a plurality of rollers on which wheels of a vehicle are to be rotatably seated, and injection nozzles configured to inject high-pressure washing water onto the wheels seated on the rollers; and a lower frame provided with a water tank located below the upper frame so as to collect falling waste/turbid water; a water storage unit configured to store washing water to be supplied to the injection nozzles; a purification unit configured to receive and purify the waste/turbid water from the water tank and then send purified water to the water storage unit, characterised in that the multipurpose wheel-washing apparatus further comprises a blowing unit disposed on an exit side of the wheel-washing unit so as to blow air and provided with spray nozzles for selectively spraying water in a particulate form, whereby the blowing unit comprises: a blower fan having rotatable blades housed in the blower fan, the rotatable blades being driven by a motor, the blower fan being provided with the spray nozzles installed on a discharge port side of the blower fan; a support arm for vertically pivotably supporting the blower fan; a swing member configured to rotate the support arm so as to control a lateral swing angle of the blower fan; and a stretchable member having both ends connected to the blower fan and the support arm so as to control a vertical pivoting angle of the blower fan with respect to the support arm depending on extension and contraction of the stretchable member. a blower fan having rotatable blades housed in the blower fan, the rotatable blades being driven by a motor, the blower fan being provided with the spray nozzles installed on a discharge port side of the blower fan; a support arm for vertically pivotably supporting the blower fan; a swing member configured to rotate the support arm so as to control a lateral swing angle of the blower fan; and a stretchable member having both ends connected to the blower fan and the support arm so as to control a vertical pivoting angle of the blower fan with respect to the support arm depending on extension and contraction of the stretchable member.