A method for processing data transmission services and a terminal are disclosed. The method includes: after a radio link disconnection occurs in a process of only performing the data transmission services of a packet-switched domain in a dedicated state, if judging that a timing value configured with a first timer is 0, a terminal deleting a radio access bearer and a signaling connection of the packet-switched domain; and if judging that a timing value configured with a second timer is not 0, initiating a cell update process, wherein, the first timer is a timer used for monitoring reestablishment of packet-switched domain services; the second timer is a timer used for monitoring reestablishment of circuit-switched domain services. According to the above scheme, the flow of processing a stream interruption of the terminal in a data transmission process can be perfected, and the drawbacks of the existing flow can be solved.