The invention provides a binocular three-dimensional bionic eye mechanism with panoramic capture and positioning functions. The mechanism comprises two mutually independent eyeballs and a neck joint, wherein the two eyeballs have the same structures and respectively have three freedom degrees, the 360-degree omnibearing scanning can be realized, and the neck joint has one freedom degree. cameras are arranged in two mutually independent eyeball joints and can rotate for 360 degrees in the horizontal and vertical directions, the set target can be captured in an omnibearing way, when one eyeball joint finds the target, the other eyeball joint can also rotate to the corresponding position to align with the target, and the positioning of the target can be realized through images shot by two cameras by a series of calculation methods. When the target is in the coincident position of two spherical joints, the blind region is avoided through the rotation of the neck joint, and the panoramic capture positioning is really realized. When the bionic eye mechanism is arranged on a device easy to incline, the capture positioning of the target can still be realized through regulating the self cameras.