Steel pipe flexible connection structure, the body both ends of steel pipe are provided with bellmouth and socket, circumference is provided with a plurality of batter pile on the bellmouth outer wall, on the socket outer wall also circumference be provided with a plurality of batter pile, contained angle homogeneous phase between batter pile and the body axis etc. Along the directional socket direction of steel pipe bellmouth, the serial cross -section radius of circle of the batter pile perpendicular to body axis of bellmouth outer wall department is by little grow gradually, the serial cross -section radius of circle of the batter pile perpendicular to body axis of socket outer wall department is by diminishing greatly gradually, behind the bellmouth and socket grafting cooperation of steel pipe, be connected through wire rope between the batter pile of bellmouth outer wall department and the batter pile that the socket outer wall was located, wire rope is when tightening the state, and the socket is located the bellmouth. This steel pipe flexible connection structure batter pile can reach fine anti -dropping effect with the wire rope combination, and simple structure, and the cost is low, has the value of extensive popularization.