The Maijishan Grottoes or Wheat Stack Hill consists of almost 200 caves and more than 10,000 Buddhist sculptures.
"Restoration of the six caves will be completed in November," Yue Yongqiang, Deputy Director of the preservation division of Maijishan Grottoes art institute said.
Due to natural humidity and erosion, cracks have appeared on some caves and some sculptures and murals are in a state of decay, said Yue.
The restorationwill cost 3.3 million yuan (about USD 500,000).
Maijishan Grottoes is one of China's four largest Buddhist cave complexes, along with Mogao, Yungang and Longmen grottoes in Gansu, Shanxi and Henan provinces.