The opening time of Beijing subway varies according to different lines and stations. Generally speaking, the operating hours of the subway are as follows:

Working days (Monday to Friday):

First bus: It leaves at 5:00-5:30 in the morning, depending on the line and station.

Last bus: arrive at the station between 22: 30 and 23: 00 in the evening, depending on different lines and stations.

Weekends and holidays:

First bus: It leaves at 5:00-5:30 in the morning, depending on the line and station.

Last bus: arrive at the station between 23: 00 and 23: 30 in the evening, depending on different lines and stations.

It should be noted that the operation time of the subway may be affected by holidays, weather and other factors. It is recommended to inquire about relevant information in advance before traveling to avoid missing the last bus.