A combination of a radio with an earphone and a ball-point pen comprises: a lower housing in which a pen core is disposed; a hollow upper housing being provided with an upper thread hole and a lower thread hole at the upper end and the lower end thereof, and being provided with an indentation and at least one through holes at the periphery thereof; a connecting body for connecting the lower housing to the upper housing; a radio circuit having the function of receiving a signal and being disposed inside the upper housing, the circuit being provided with a switch for controlling the volume and the power source of the radio, a reset key and a channel key for adjusting the frequency, and a earphone receptacle, wherein the switch corresponds to the indentation while the reset key and the channel key correspond to the through holes, respectively; at least one battery disposed at the upper surface of the connecting body for providing the circuit with power; a cover having an earphone socket at the top portion thereof, and fixedly (threadedly) connected to the upper thread hole; and a plug of an earphone selectively inserted into the socket for causing the communication of the plug and the receptacle.