Abstract: A multifunctional quick hair curling and straightening device comprises a handle (1), an upper holding arm (2), and a lower holding arm (3). The handle (1) is provided with an air inlet end (11) and an air outlet end (12). The lower holding arm (3) is fixedly disposed at the air outlet end (12). A tail end of the upper holding arm (2) is hinged to a tail end of the lower holding arm (3). The upper holding arm (2) and the lower holding arm (3) are provided with a first heating plate (21) and a second heating plate (31), respectively. An air blowing mechanism (13) is disposed in the handle (1). An air blowing port of the air blowing mechanism (13) directly faces the tail ends of the upper holding arm (2) and the lower holding arm (3). Outer surfaces of the upper holding arm (2) and the lower holding arm (3) are each provided with a plurality of air grooves (5) in a circumferential direction.