The statues, many of which were found in pieces, were brightly coloured and lying alongside pots, weapons and other items, said China Daily.
Research teams also found evidence of burn marks on the clay, proof that the pit had at some point been set on fire.
More than 8,000 of the statues, made in 221BC, have already been unearthed.
Xu Weihong, head of the research team, told China Daily the warriors had been found during the third excavation of the largest of the three pits at the tomb complex. The excavations began in June last year.
“We were pleasantly surprised to find rich colours on the Terracotta Warriors,” he said.
“It was hard work to restore the clay warriors as they were broken into pieces. It took us at least 10 days to restore one.”