The embodiments of the invention disclose a carrier aggregation mode setting method for a communication terminal and the communication terminal. The carrier aggregation mode setting method for the communication terminal comprises: acquiring current remaining battery capacity of the communication terminal; if the remaining battery capacity is greater than or equal to a first preset capacity threshold, further determining a data traffic value; judging whether the uplink data traffic value is greater than or equal to a first preset traffic threshold or not, and judging whether the current applications include a first preset type of applications or not; if the uplink data traffic value is greater than or equal to the first preset traffic threshold, or the current applications include the first preset type of applications, setting the carrier aggregation function mode as an uplink carrier mode. According to the method, the carrier aggregation mode is set in combination with the current remaining battery capacity of the terminal and the requirement of the terminal for data traffic, so that the power consumption problem of the terminal is considered, meanwhile, the requirement of a user for data traffic is met, and the user experience when the user uses the applications of the terminal is improved.