The invention proposes a front suspension deflecting structure for the backing of a tricycle. A connection frame is provided with four rocking arm installation holes which are not coaxial. The inner ends of a right upper arm and a right lower arm are provided with rolling bearings. A connection shaft installed in the interior is installed at the left side of the connection frame, and the outer ends of the right upper arm and the right lower arm are provided with rolling bearings, and the rolling bearings are respectively installed at a right upper rotating hinge and a right lower rotating hinge through connection shafts. The outer ends of a left upper arm and a left lower arm are respectively provided with rolling bearings, and the rolling bearings are respectively installed at a left upper rotating hinge and a left lower rotating hinge through connection shafts. Upper and lower hinge installation holes of steering knuckles are inclined relatively to the ground, and a front suspension is enabled to have the characteristics of an automobile master pin. The structure gives consideration to the operation stability of motion of a four-wheel automobile and the running flexibility of a two-wheel vehicle. The structure automatically tilts in a turning process, easily achieves the bending running operation, and is stable in operation in a riding process.