The invention relates to a system for constructing walls using blocks equipped with coupling means, comprising blocks having: ridges that fit into grooves, bases that fit into channels, cavities for the flow of adhesive, notches in which ducts for installations are located, perforations for reinforcing the wall with post-tensioned cable or rebar, provisions for building frames for doors or windows, and tunnels for housing piers, among other elements, which together allow a wall to be constructed without skilled labor, saving materials and reducing construction time.