The utility model discloses an oilfield tail gas desulfurization device. The oilfield tail gas desulfurization device comprises a gas feeding pipe, a gas jetting mixture, a first liquid discharging pipe, a gas-liquid mixing and feeding pipe, a gas discharging pipe, a gas exhausting valve, a second liquid discharging pipe, a gas-liquid reaction and desulfurization tank, a desulfurization and reaction bed and a liquid distributor, wherein the desulfurization and reaction bed is formed by a corrugated packing, and the liquid distributor comprises a linear screening pipe and an annular screening pipe. By adopting the tail gas desulfurization device, the gas-liquid mixing efficiency and the rate of reaction of the absorption liquid and the hydrogen sulfide can be improved significantly, and by using the screening pipes to distribute the liquid, the possibility that the screening pipes are blocked by oil containing components in the tail gas can be reduced further, and the continuous desulfurization cycle can be prolonged further.