The invention discloses a high-strength fuel gas cylinder cover and a production technology thereof. The production technology comprises the following steps that step (1), furnace burdening is prepared, low-S nodular cast iron pig iron and pure carbon waste steel are selected, a medium-frequency induction electric furnace is adopted for smelting, wherein the smelting temperature is controlled to be 1500-1550 DEG C, argon is blown into molten iron, the blowing depth is 20-40% at the depth of the furnace, the blowing time is 5-8 minutes, and then the molten iron is discharged; step (2), spheroidizing and first inoculation treatment are carried out, and a pour over method is adopted; step (3), pouring and a second inoculation treatment are carried out, the pouring temperature of the molten iron is not lower than 1400 DEG C, the second inoculation is carried out by adopting a second nucleating agent during the pouring, and the second inoculation is a metal-stream instantaneous inoculation;step (4), after the pouring is completed, the waste heat of a casting is used for carrying out heat treatment until the room temperature is reached. The technology is reasonable in design, the heat treatment process of the technology is omitted, so that the production cost is reduced, environmental pollution is reduced; and the mechanical property of the fuel gas cylinder cover obtained by the technology is improved correspondingly.