Passengers made 4.679 million trips across the country on Feb 7, the lunar new year eve, increasing by 283,000 and 6.4 percent year on year.
The Shanghai railway station saw the biggest growth in passenger trips, increasing by 81,000 and 9.4 percent year on year.
A total of 2.94 million passenger trips across the country are expected on Monday, the lunar new year day, the company said.
Most of those trips are in short distance and for tourism as increasingly affluent Chinese tend to spend their Spring Festival holiday in traveling to different places with families.
China has spent heavily on the high-speed railway network which is already the world's largest, making it more convenient for riders to travel.
Around 3,300 km of new lines opened last year, bringing the total operating length to 19,000 km and completing the major frame of the network.