A fan head component for a bladeless blowing device, comprising an air output portion which comprises an air inlet, a nozzle and an air channel, wherein both the air inlet and the nozzle are communicated with the air channel, the air channel has a variable cross-section portion, an air flow area corresponding to the variable cross-section portion varying continuously in a vertical direction, and the air flow area corresponding to a lower end of the variable cross-section portion being greater than the air flow area corresponding to an upper end of the variable cross-section portion; characterized in that the fan head component comprises a guide device disposed in the air channel to form the variable cross-section portion, the guide device comprising a first guide member, the first guide member having a first guide surface, the first guide surface obliquely extending downwardly to block a part of intake air, the air flow area of the air channel corresponding to a lower end of the first guide surface being greater than the air flow area of the air channel corresponding to an upper end of the first guide surface, and a corresponding part of the air channel between the lower end and the upper end of the first guide surface being the variable cross-section portion; wherein the guide device further comprises a second guide member positioned above the first guide member, the second guide member having a second guide surface which obliquely extends upwardly, a lower end of the second guide surface being connected with the upper end of the first guide surface, and the air flow area of the air channel at the lower end of the second guide surface being smaller than the air flow area of the air channel at an upper end of the second guide surface; wherein the nozzle extends along a vertical direction of the air channel, there being a plurality of variable cross-section portions, and the plurality of variable cross-section portions being disposed along the vertical direction of the air channel and spaced from each other; and wherein a number of the second guide member is determined according to an actual need, the first guide member does not need to be disposed in one-to-one correspondence with the second guide member. characterized in that the fan head component comprises a guide device disposed in the air channel to form the variable cross-section portion, the guide device comprising a first guide member, the first guide member having a first guide surface, the first guide surface obliquely extending downwardly to block a part of intake air, the air flow area of the air channel corresponding to a lower end of the first guide surface being greater than the air flow area of the air channel corresponding to an upper end of the first guide surface, and a corresponding part of the air channel between the lower end and the upper end of the first guide surface being the variable cross-section portion; wherein the guide device further comprises a second guide member positioned above the first guide member, the second guide member having a second guide surface which obliquely extends upwardly, a lower end of the second guide surface being connected with the upper end of the first guide surface, and the air flow area of the air channel at the lower end of the second guide surface being smaller than the air flow area of the air channel at an upper end of the second guide surface; wherein the nozzle extends along a vertical direction of the air channel, there being a plurality of variable cross-section portions, and the plurality of variable cross-section portions being disposed along the vertical direction of the air channel and spaced from each other; and wherein a number of the second guide member is determined according to an actual need, the first guide member does not need to be disposed in one-to-one correspondence with the second guide member.