To provide a voice information service system wherein designation of the desired item of the voice information can be easily performed even with a cordless telephone by manipulating one or two specific telephone keys, the voice information service system comprises; a DTMF input timing detector (4) for detecting input timing of a specific DTMF (Dual Tone Multi-Frequency) code entered by the user, and calculating an effective passage time necessary for reproducing the voice information from a head until the specific DTMF code is entered, and an information number setting section (3) for determining an alternative information number of voice information to be reproduced next, according to the effective passage time, information number of the voice information actually served and a kind of the specific DTMF code.