Wind power blade body lightning arrester

The invention provides a wind power blade body lightning arrester which comprises a plurality of conductive shells, the conductive shells are sequentially and detachably connected together to form a lightning protection cover used for covering a wind power blade, every two adjacent conductive shells are isolated through a first insulating layer, a second insulating layer is arranged on the inner side of each conductive shell, and the second insulating layer is arranged on the outer side of each conductive shell. Each conductive shell is isolated from the wind power blade through the corresponding second insulating layer; each conductive shell is provided with at least one lightning arrester. When the wind driven generator blade lightning arrester encounters lightning stroke, any conductive shell in the wind driven generator blade lightning arrester can be partially replaced when damaged, so that the aims of saving resources and reducing the cost required by equipment maintenance are fulfilled. 本发明提供一种风电叶片叶身避雷