A method for identifying a Stream Control Transmission Protocol, SCTP, packet, comprising: acquiring a feature tuple of a received SCTP packet, wherein the feature tuple comprises at least one piece of the following information: a source Internet Protocol, IP, address, a destination IP address, and a verification tag, V_tag,; matching the acquired feature tuple of the SCTP packet with a SCTP tuple identification table, wherein the SCTP tuple identification table comprises a mapping relation between a feature set tuple and an SCTP association, and the feature set tuple comprises at least one piece of the following information: a source IP address set, a destination IP address set, and a V_tag; acquiring an SCTP association to which the SCTP packet belongs, if the acquired feature tuple of the SCTP packet matches one or more records of the SCTP tuple identification table, whereby the method is further characterised by: parsing a current SCTP handshake message to obtain new feature set tuples having an association relation if the acquired feature tuple of the SCTP packet does not match one or more records of the SCTP tuple identification table, and adding the feature set tuples into the SCTP tuple identification table as one or more new records, wherein the received SCTP packet is the current SCTP handshake message; identifying an application type borne by the SCTP association to which the SCTP packet belongs; and labeling the one or more new records with an application identifier, wherein the application identifier corresponds to the application type. acquiring a feature tuple of a received SCTP packet, wherein the feature tuple comprises at least one piece of the following information: a source Internet Protocol, IP, address, a destination IP address, and a verification tag, V_tag,; matching the acquired feature tuple of the SCTP packet with a SCTP tuple identification table, wherein the SCTP tuple identification table comprises a mapping relation between a feature set tuple and an SCTP association, and the feature set tuple comprises at least one piece of the following information: a source IP address set, a destination IP address set, and a V_tag; acquiring an SCTP association to which the SCTP packet belongs, if the acquired feature tuple of the SCTP packet matches one or more records of the SCTP tuple identification table, whereby the method is further characterised by: parsing a current SCTP handshake message to obtain new feature set tuples having an association relation if the acquired feature tuple of the SCTP packet does not match one or more records of the SCTP tuple identification table, and adding the feature set tuples into the SCTP tuple identification table as one or more new records, wherein the received SCTP packet is the current SCTP handshake message; identifying an application type borne by the SCTP association to which the SCTP packet belongs; and labeling the one or more new records with an application identifier, wherein the application identifier corresponds to the application type. parsing a current SCTP handshake message to obtain new feature set tuples having an association relation if the acquired feature tuple of the SCTP packet does not match one or more records of the SCTP tuple identification table, and adding the feature set tuples into the SCTP tuple identification table as one or more new records, wherein the received SCTP packet is the current SCTP handshake message; identifying an application type borne by the SCTP association to which the SCTP packet belongs; and labeling the one or more new records with an application identifier, wherein the application identifier corresponds to the application type.