The invention discloses a gas magnetic control valve which belongs to the control valve technical field of a gas pipeline; the problem to be solved is as follows: providing a gas magnetic control valve, specifically a magnetic control valve with small seal contact area and ring-shaped line contact; controlling the opening or closing manually; providing simple valve manufacturing process with highprecision, good sealing performance and low cost. The proposal adopted is as follows: a valve plate is fixed at the left end of a valve stem in a side channel B; the right end of the valve stem is sheathed inside the valve stem sleeve of a T-typed cover; the left end of a spring is sheathed at one side of the valve stem and leans against the valve plate which leans against the edge of a valve holein the left so as to block the valve hole; the right end of the spring is sheathed outside the valve stem sleeve of the T-typed cover and leans against the left wall of the T-typed cover which is fixed on the channel opening of the side channel B by sealing thread; the outer wall of the top part of the side channel B of the valve body is provided with a rotating plate by a pin; the end of the rotating plate is fixed with an external magnet; the gas magnetic control valve of the invention is suitable to be used indoors and outdoors.