The invention discloses a method for keeping conference calling and a system thereof. The method includes steps as follows: a calling keeping service equipment receives a calling keeping information come from a user equipment; the calling keeping service equipment confirms the receiving side of the calling keeping information being a conference service equipment and sends the calling keeping information to the conference service equipment. The conference participant can not listen a keeping sound in the conference calling keeping process by using the technique scheme provided by the invention, accordingly, interference by the keeping sound to the conference can be avoided and the conference is processed normally.