The utility model belongs to the ultraviolet ray flame detection field, and more specifically relates to an ultraviolet ray flame induction sensor. The ultraviolet ray flame induction sensor is composed of a drive circuit, an ultraviolet ray photosensitive pipe, a signal processing circuit, a signaling conversion circuit, a direct current voltage stabilizing circuit, the drive circuit, the ultraviolet ray photosensitive pipe, the signal processing circuit and the signaling conversion circuit are connected end to end. The direct current voltage stabilizing circuit provides the power to the drive circuit, the signal processing circuit and the signaling conversion circuit. The ultraviolet ray photosensitive pipe has the advantages of high sensitivity and low false alarm rate, the circuit enables treatment and rectification on the signal, and when the signal is emitted, an receiving end can accurately and effectively identify the obvious flame detection signal. The ultraviolet ray flame induction sensor has the following beneficial effects that the frequently generated false alarm rate phenomenon of the flame sensor can be eliminated, the system stability is increased, the influence of false alarm on real calamity can be avoided, and the security during a whole production process can be greatly increased.