Provided are a system and method for a safe taxi service. The method for a safe taxi service in a mobile device includes: transmitting input information regarding a destination to a vehicle information system; periodically receiving information regarding a current location of a vehicle from the vehicle information system; comparing the current location with an expected path to the destination; and transmitting state information to an external system when it is determined, according to the comparing, that the current location deviates from the expected path to the destination to an extent equal to or greater than a predetermined limit.