The invention provides an SAGD (steam assisted gravity drainage) well group provided with double horizontal wells. The SAGD well group comprises a steam injection well and a production well, wherein a steam injection well casing pipe and a steam injection well screen pipe which are mutually connected are arranged in the steam injection well; the steam injection well screen pipe extends in the horizontal direction; a first pipe body and a second pipe body are arranged in the steam injection well casing pipe and the steam injection well screen pipe side by side, and the length of the first pipe body is smaller than that of the second pipe body; a production well casing pipe and a production well screen pipe which are mutually connected are arranged in the production well, the production well screen pipe extends in the horizontal direction, a third pipe body and a fourth pipe body are arranged in the production well casing pipe and the production well screen pipe side by side, and the length of the third pipe body is smaller than that of the fourth pipe body; the tail end of the horizontal section of the first pipe body and the tail end of the horizontal section of the third pipe body are staggered in the horizontal direction. With the adoption of the technical scheme, the problem that an SAGD oil pipe used in the prior art is prone to inter-wall steam channeling in a heat exchange area of an injection and production well is solved.