The utility model relates to a whole filled-typed plastic coated steel strand, which comprises a composed of a core line (1) and several lateral lines (2). The utility model is characterized in that: the exterior margins of the steel strand are coated with a HDPE plastic anti-corrosion layer (3), and the space between the core line (1) and the each lateral line (2) is also filled with HDPE plastic anti-corrosion layer (4). The utility model steel strand has good corrosion resistance, chemical resistance, and water resistance; having matched mechanical performance and use performance with the common PC steel strand, and being widely used as the anchor cable in non-bond construction.