The invention belongs to the technical field of steel type continuity, and particularly relates to a steel type continuity method of a continuous annealing furnace related intelligent production schedule system. According to the steel type continuity method of the continuous annealing furnace related intelligent production schedule system, through mathematical modeling of various steel type annealing curves, continuous annealing furnace inside steel type continuity regulations on the premise that the product performance is ensured are established, whether two of the steel types in the same production schedule meet the continuity condition or not is judged one by one, and then the optimal steel type continuity scheme is determined. The method has the beneficial effects that the energy consumption is reduced, and the stable product performance is ensured; the situation that the unqualified performance problem of former and later connected steel types occurs can be judged in advance, and thus economic losses are prevented from being increased through manual intervention; and the method can be applied to continuous annealing production lines, continuous hot galvanizing production lines and the like comprising continuous annealing furnaces.