The embodiment of the invention provides a method, device and system for determining clock tracking ring formation, which relate to the field of communication and can be used for quickly and accurately determining clock tracking ring formation. According to the solution, the method comprises the following steps of: receiving a first message which carries a grandmaster clock heartbeat signal transmitted by a grandmaster clock in a network; judging whether the heartbeat signal carried in the first message is the same as a heartbeat signal carried in a second message previously received from the grandmaster clock; if the heartbeat signal carried in the first message is different from the heartbeat signal carried in the second message previously received from the grandmaster clock, determining that clock tracking ring formation does not occur in the network and that the first message is normal; and if the heartbeat signal carried in the first message is the same as the heartbeat signal carried in the second message previously received from the grandmaster clock, determining that clock tracking ring formation occurs in the network and that the first message is abnormal. The embodiment of the invention is applied to clock tracking.