The invention discloses a method for improving the rapid continuous casting tundish change success rate. The method comprises the following steps that firstly, the waiting time for which a steel ladlefully contains molten steel is 5-10 min, and the temperature that the steel ladle reaches a continuous casting platform is 1,590-1,600 DEG C; secondly, the work tundish molten steel pull rate is reduced by one gear at the interval of 20 s, and the pull rate of a continuous casting machine is reduced to 0.3 m/min within 8 min; thirdly, the work tundish liquid level is measured, and when work tundish pouring is stopped, a standby tundish car and a work tundish car conducting pouring are started towards the other side at the same time; fourthly, after the standby tundish car is driven to the pouring station, an infrared immersing type water gap is rapidly installed; fifthly, after preparation of the standby tundish car is finished and 10 tons of molten steel is poured, 150-200 kg of a covering agent is added into a standby tundish; sixthly, when the steel ladle pours 20 tons of molten steel into the standby tundish, the molten steel is injected into a crystallizer; and after the standbytundish starts pouring, the continuous casting pull rate starting operation is conducted. By means of the method, the rapid continuous casting tundish change time is shortened, the rapid continuous casting tundish change success rate is increased, the continuous casting machine operation rate is increased, the production cost is reduced, and the labor intensity of workers is relieved.