Disclosed in the present application are a method and an apparatus for timing maintenance under a coverage enhancement mechanism. The method includes steps of determining a position in a time domain for the last repeated transmission over a timing-related physical channel; and determining a start time point for the timing in accordance with the determined position in the time domain. According to the present disclosure, the start time point for the timing is determined in accordance with the position in the time domain for the last repeated transmission over the timing-related physical channel.