You can take Metro Line 2 to Daxing Line of Metro Line 4. According to Baidu map information, the specific route from Fuchengmen to Beijing Jiahe Women and Children's Hospital, No.69 Majiapu, Fengtai District is as follows:

1, Fuchengmen Station, take the outer ring station of Metro Line 2 and get off at Xuanwumen Station.

2. Xuanwumen Station, take Metro Line 4, Daxing Line, 5 stops, get off at Jiaomen West Station, and walk 1.4 km to Beijing Jiahe Women and Children Hospital.