The invention discloses a method for ensuring uniqueness of an
instant messaging message of multi-platform equipment, and relates to the technical field of
instant messaging. The method comprises thefollowing steps: S01, sending, by a
receiver A, a message to a login node of the
receiver A; S02, sending the message sent by the
receiver A to a
server; S03, querying online states of the receiver Aand other receivers in a
database of the
server; S04, issuing, by the
server, the message to a received node; and S05, sending, by the node, a message to the
client. According to the method, the problem of losing a message loss or sending messages twice during network switching is solved, the problem of disordered
time sequence of multi-platform messages is solved, and the sending sequence of allmessage fingerprints is kept by introducing the object of the unique time
queue of a central server, the unique time
queue of the central server is received every time the message is received, and thecontent of the
instant messaging message is displayed with referrence to the sequence of the unique time
queue of the central server when the
client needs to display the message.