The compressive strength of the concrete reviewed in this study uses nano-silica and coconut fibers. The addition of coconut fibers to concrete contributes to the construction of sustainable and environmentally friendly building materials. The testing method carried out physically and mechanically. Testing the compressive strength of the nano concrete composite with variations in the amount of nano-silica which substituted with cement. Using variations of nanosilica composition, namely 0%, 0.5%, 1%, 1.5%, and 2% added with coconut fiber to determine the effect of compressive strength from nano concrete composite. The results obtained are the optimal value of concrete compressive strength with nano-silica is the addition of 2% nano-silica, which increases 43% of standard concrete. Moreover, on concrete with the addition of nano-silica and the addition of coconut fibers 1% test results in concrete compressive strength which is optimal in the addition of 0.5% nano-silica, which is 58% increase from normal concrete. The conclusion of this study that the addition of nano-silica and reinforced with coconut fiber will increase the compressive strength of concrete, this is an excellent composite material to get environmentally friendly building materials using.