The invention discloses a control method for
multicast service post-blockage, which comprises the following steps that: when the program with illegal content is blocked, a
backup program is started, and the
multicast address of the
backup program is the same as the
multicast address of the blocked program, and the
source address of the
backup program is different from the
source address of the blocked program; the program steam of illegal content is continually transmitted on a monitoring interface, and a broadcast platform normally receives the program
stream; and the backup program steam passes through a preset static
route, and is transmitted on an
user interface, and then, the user receives the backup program steam. The invention also discloses a
control system for multicast service post-blockage. With the invention, the limit of illegal program can be realized, no any affect on watching television program by the
end user can be caused, and the watching experience effect for the user can be ensured.