The invention relates to the technical field of metallurgical converters, and discloses a method for controlling the temperature in converter smelting, which comprises the following steps: step 1, temperature sensor installation: installing a high-temperature temperature sensor in a converter, and monitoring the temperature in the converter in real time; step 2, data acquisition: acquiring data of the temperature sensor in real time through a data acquisition system, and transmitting the data to a control system; step 3, modeling a control system: establishing a mathematical model of the converter smelting process; and 4, parameter control is conducted, specifically, the temperature in the furnace is accurately controlled in combination with the temperature, the material mass, the oxygen flow and the fuel flow parameters. Through temperature sensor installation, data acquisition, real-time temperature data monitoring and mathematical model establishment, accurate control of the temperature in the furnace is realized, stable operation of the production process is ensured, a fuzzy control or neural network control algorithm is utilized to optimize a control strategy, the control precision and the system stability are improved, and the system can adapt to a complex production environment.