The Yi Yuan Mansion or Maxing Chen Yi-Yuan Family Mansion () is a historical house in Xiushui Township, Changhua County, Taiwan. It is the largest old mansion in the county.
The mansion was built in 1846 by the Chen Family, featuring 3 halls, 6 wing rooms, and over 90 rooms. The compound consists of outer courtyard, gatehouse, front courtyard, front gate, atrium, sedan chair hall, main hall, backyard, and rear hall, occupying nearly one hectare of land.