A large portion of Tianhe Park's rides area was removed to allow for construction of Line 21 of the Guangshou Metro. When completed, Tianhe Park will have it's own Metro station. It isn't known if the rides will return.
The closest Guangzhou Metro (广州地铁) stop to Tianhe Park is the Yuancun Station (员村站) on Line 5 (Red) which is approximately 1.4 km (0.9 miles) south of the west gate. The main park entrance is technically closer being on the south side of the park, but the amusement area is located just inside of the west gate. Use exit "C" from the Yuancun Station (员村站) and turn right or north to get to the park.