A method for random access, comprising: sending, by a terminal device, an access request message to a network device, and indicating access auxiliary information of the terminal device to the network device through the access request message; and receiving, by the terminal device, an access response message sent by the network device according to the access request message, wherein the access response message comprises indication information for indicating rejection of access of the terminal device, and the indication information comprises access suggestion information corresponding to the access auxiliary information, characterized in that the sending, by the terminal device, the access request message to the network device, and indicating the access auxiliary information of the terminal device to the network device through the access request message, comprises: determining, by the terminal device, a target resource for transmitting the access request message according to the access auxiliary information and a correspondence between a plurality of pieces of access auxiliary information and a plurality of transmission resources; and using, by the terminal device, the target resource to send the access request message to the network device, so that the network device determines the access auxiliary information according to the correspondence and the target resource for receiving the access request message, wherein the access suggestion information comprises at least one of following pieces of information: information of a cell where the network device suggests the terminal device to reside, and information of a network that the network device suggests the terminal device to access. sending, by a terminal device, an access request message to a network device, and indicating access auxiliary information of the terminal device to the network device through the access request message; and receiving, by the terminal device, an access response message sent by the network device according to the access request message, wherein the access response message comprises indication information for indicating rejection of access of the terminal device, and the indication information comprises access suggestion information corresponding to the access auxiliary information, characterized in that the sending, by the terminal device, the access request message to the network device, and indicating the access auxiliary information of the terminal device to the network device through the access request message, comprises: determining, by the terminal device, a target resource for transmitting the access request message according to the access auxiliary information and a correspondence between a plurality of pieces of access auxiliary information and a plurality of transmission resources; and using, by the terminal device, the target resource to send the access request message to the network device, so that the network device determines the access auxiliary information according to the correspondence and the target resource for receiving the access request message, determining, by the terminal device, a target resource for transmitting the access request message according to the access auxiliary information and a correspondence between a plurality of pieces of access auxiliary information and a plurality of transmission resources; and using, by the terminal device, the target resource to send the access request message to the network device, so that the network device determines the access auxiliary information according to the correspondence and the target resource for receiving the access request message, wherein the access suggestion information comprises at least one of following pieces of information: information of a cell where the network device suggests the terminal device to reside, and information of a network that the network device suggests the terminal device to access.