The invention relates to a garlic skin peeling, garlic slice cutting and garlic mashing integrated garlic processing device which mainly comprises a shell, a motor, a garlic skin peeling part, a garlic slice cutting part, a garlic mashing part and a skin collecting cover part. The garlic skin peeling part is mainly composed of blades, a heating resistance wire, a rotary rod and the motor. Surface layers of garlic skin are heated through air heated through the heating resistance wire to generate miniature blasting, the rotary rod rotates to have the friction and extrusion effects on garlic, and garlic skin peeling is achieved in the three means including the hot art blasting, friction and extrusion. The garlic slice cutting part is mainly composed of a cylinder with long-strip-shaped blades and a circular truncated cone cylinder for containing garlic slices. The garlic mashing part is mainly composed of a cylinder with circular-ring-shaped blades and a circular truncated cone cylinder for containing mashed garlic. The skin collecting cover part is located above the shell and used for collecting the garlic skin. According to the garlic processing device, the multiple functions are integrated, and the garlic processing device is simple in structure, small in size, environmentally friendly, low in manufacturing difficulty and cost and capable of being suitable for families and small and medium size catering enterprises.