The invention discloses a cable trench cover plate unit. The cable trench cover plate unit is formed by a steel bar framework and concrete. The cross section of the cable trench cover plate unit is in a structure shaped like a Chinese character "tu"; the "tu"-shaped surface is provided with run-through or non-run-through hoisting ports; each hoisting port is internally provided with a hoisting portion; and the hoisting portion is one part of the steel bar framework. The cable trench cover plate unit is simple in construction, good in bearing capacity, good in shock resistance and high in strength, and is suitable for places of pavements, communities, squares and parking lots and the like.