Electric field is defined as the electric force per unit charge. The direction of the field is taken to be the direction of the force it would exert on a positive test charge. The electric field is radially outward from a positive charge and radially in toward a negative point charge.
Hence, we can say, if a charge is a positive charge, then the lines of force come out of this charge. But for a negative charge, these lines of force come into this charge.