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A carbon fiber mat is a sheet composed of intercrossing short carbon fibers,whichhas more stable and lower electrical resistivity compared with dispersed short carbon fiber mixedin cement.Thereby carbon fiber mat cement could exhibit obvious electro-thermal effect.Whenelectrified,the temperature of composite structures made up of cement mortar and carbon fibermat will rise rapidly.If the temperature field is not uniform,temperature difference will causestructures to deform,which can be used to adjust the deformation of structures.The temperaturefield and deformation response driven by the electro-thermal effects of a type of carbon fiber matcement beams are studied.Firstly,the temperature and deformation responses are studied usingtheories of thermal conduction and elasticity.Secondly,experimental results are given to verifythe theoretical solution.These two parts lay the foundation for temperature and deformationadjustment.“,”A carbon fiber mat is a sheet composed of intercrossing short carbon fibers,which has more stable and lower electrical resistivity compared with dispersed short carbon fiber mixed in cement.Thereby carbon fiber mat cement could exhibit obvious electro-thermal effect.When electrified,the temperature of composite structures made up of cement mortar and carbon fiber mat will rise rapidly.If the temperature field is not uniform,temperature difference will cause structures to deform,which can be used to adjust the deformation of structures.The temperature field and deformation response driven by the electro-thermal effects of a type of carbon fiber mat cement beams are studied.Firstly,the temperature and deformation responses are studied using theories of thermal conduction and elasticity.Secondly,experimental results are given to verify the theoretical solution.These two parts lay the foundation for temperature and deformation adjustment.