A vehicle emergency system includes an accident detection unit for detecting a collision strength to generate an accident signal, a telematics unit for generating a flag signal in response to the accident signal and for storing the flag signal, and a call center server for recognizing an emergency situation when the flag signal is delivered, and for executing an emergency procedure after emergency call, in which the telematics unit, even when reset by the accident signal, checks the flag signal stored before reset, and automatically transmits at least one of the flag signal and an accident message generated based on the flag signal into the call center server.