A communication channel setting method and a communication channel selection method for an electronic device are provided. The communication channel setting method measures the interference between two communication protocols implemented on the same electronic device and stores threshold values and a look-up table obtained from the measurements in the electronic device. Next, the electronic device executes the channel selection method. The channel selection method selects usable channels of one of the two communication protocols according to the threshold values and the look-up table, thereby preventing or alleviating the interference between the communication protocols.