PURPOSE: To present the simulation device for the continuous casting machine which can simulate the thermal behavior of the cast slab during casting precisely.

CONSTITUTION: On the above simulation device, the thermal behavior of the cast slab 5 during casting can be simulated precisely, because the heat transmission rate hw from the finite element model Mj of the cast slab 5 which is guided continuously with the rolls Ri, Ri+1 and blowed with the cooling water 4, etc., to the atmosphere is operated based on the surface temperature of the cast slab 5 obtained from the heat transmission rate hw from the finite element model Mj-1 which is operated in former timer, and the blowing quantity distribution 7 which is actually measured data on the operation about the blowing quantity of the above cooling water 4, etc.