Firework setting-off barrel fixing device, setting-off system and setting-off method thereof

The invention discloses a firework setting-off barrel fixing device, a setting-off system and a setting-off method thereof. A firework setting-off barrel comprises a barrel fixing seat, wherein the barrel fixing seat is provided with a detachable base fixed at any coordinate position of a firework setting-off base, and a barrel shaft detachably connected with the bottom of the barrel is arranged on the detachable base; at least two rotational degrees of freedom with crossed rotational central shafts and a locking part for locking the rotational degrees of freedom are arranged between the barrel shaft and the base; the barrel shaft and the barrel can be adjusted to upwards launch fireworks at any angle through multiple groups of rotational degrees of freedom; and the locking part ensures the stable posture of the barrel in the setting-off process. According to the firework setting-off barrel fixing device, the setting-off system and the setting-off method thereof, disclosed by the invention, the setting-off of