The present invention provides a mobile terminal and an access method for an E-RUCCH. The method comprises: when upload data authorization information has expired and the amount of buffer data in a logical channel of the mobile terminal is zero, starting a timer; judging whether or not the timer is timed out, and if upload data authorization information is received before the timer is timed out, resetting the timer and initiating an E-RUCCH access; if the upload data authorization information is not received before the timer is timed out, resetting the timer when the timer is timed out and judging whether there is any buffer data in the logical channel; and when the amount of the buffer data in the logical channel exceeds a threshold of the buffer data in the logical channel, initiating the E-RUCCH access. Through the above-mentioned method and the mobile terminal, it is able to control the E-RUCCH access time of the mobile terminal and prevent the mobile terminal from initiating unnecessary, frequent access.