Abstract This paper proposes an optically controlled terahertz switcher based on cross-shaped metal resonators metasurface covered by graphene monolayer. The spectral characteristics of composite structure proposed were calculated using the surface conductivity model of graphene and the finite element method. The modeling demonstrated the appearance of a narrowband resonant dip in the transmission spectrum (modulation depth of 36.8% and Q-factor of 250) after achieving an optical pump intensity of 0.2 W/mm2. In addition, the modulation depth of such a dip can be slightly tuned by varying of the pump intensity value. Thus, the design of the optically tunable terahertz switcher may contribute towards the development of functional components for terahertz communication applications.