Deepwater ground anchor connecting device and connecting method

The invention discloses a deepwater ground anchor connecting device and method, the deepwater ground anchor connecting device comprises a male end connecting piece, a female end connecting piece, a locking assembly and a traction rope, the lower part of the female end connecting piece is provided with a cavity structure, and the locking assembly is arranged in the cavity structure; the female end connecting piece is connected with the upper end of the male end connecting piece in an inserted mode through the cavity structure and fixed through the locking assembly. The male end connecting piece and the female end connecting piece are each provided with a rope penetrating groove allowing the pulling rope to penetrate through. A connector is arranged at the lower end of the male end connecting piece and used for being connected with a ground anchor, and the upper end of the female end connecting piece is connected with a longitudinal cable through a connecting assembly. According to the deepwater ground anchor c