The present invention provides a steel for large-sized rolling steel integral wheel for railway, the mass percent of its chemical composition is: C 0.46-0.55%, Si0.20-0.37%, Mn0.70-0.85%, Ni0.10-0.25%, Cr0.24~0.32%, Als0.020~0.040%, P≤0.008%, S≤0.008%. The heat treatment process is as follows: heat the wheel after rolling and slow cooling according to the conventional process to 860-880°C with the furnace, keep it warm for 3-3.5 hours, then take it out of the furnace and air-cool it to room temperature, then raise the temperature of the wheel to 840-860°C with the furnace, keep it warm After 3.5-4 hours, immediately cool down to below 550°C after leaving the furnace, then air-cool to room temperature at a cooling rate of 2°C / s-5°C / s, then put the cooled wheel into a furnace at 480-500°C, and keep it warm for 4.5-5 hours. Remove from the oven and air cool.