The authors developed an electric heating composite with carbon fiber paper as the electric heating material and fiberboard as the substrate glued with melamine modified urea-formaldehyde adhesive. Influences of hot-pressing pressure and glue spread on the composite properties, including drop rate of resistance（DRR）, micro conductive structure and internal bonding strength, were evaluated. Results showed as the glue spread increased, lap interfaces between carbon fiber in electric heating layers were affected with a linear decline relationship and DRR from 24% to 40%. Considering internal bonding strength of the composite, optimum parameters were determined to be 0.8 MPa pressure and 130 g/m,2, double-faced glue spread.