Simulation of conoscopic figures was made using 4 x 4 matrix method. After summarizing the 4 x 4 matrix method, the process for simulating conoscopic figures was briefly described. The conoscopic figures were simulated for the subphases exhibited in antiferroelectric liquid crystals, SmC*, SmCgamma* and SmCA*. The simulation was made for more complicated structures, in which SmC* and SmCgamma* coexist, and for a hypothetical phase, in which directors randomly distribute on smectic cones.