The invention discloses a hole drilling device for a watchband. The hole drilling device for the watchband comprises a bracket (1), a first supporting rod (2), a second supporting rod (3), a guide plate (17), a hole drilling device body, a power mechanism of the hole drilling device body, and a pneumatic compressing device, wherein the first supporting rod (2) and the second supporting rod (3) are fixed to the inner top part of the bracket; the hole drilling device body and the power mechanism of the hole drilling device body are fixed to the tail end of the first supporting rod (2); the compressing device and a power mechanism of the compressing device are fixed to the tail end of the second supporting rod; the guide plate (17) is horizontally arranged; one end of the guide plate (17) is fixed to the sidewall of the bracket (1) while the other end of the guide plate (17) is connected with the compressing device and the power mechanism of the compressing device. The hole drilling device for the watchband has the effects of being simple in structure, simple and convenient to operate, and accurate in hole drilling; in addition, the labor intensity is low, and the generalizability is high.