Central emergency units were established for medical and economic reasons in many German hospitals. The huge number of patients requiring treatment more or less urgent led to an implementation of triage-systems, which are known from abroad. Five of those triage-systems with different approaches are going to be presented below. The Manchester triage-system is the one of those, which can be transferred to German circumstances the best and is the most common clinical triage-system in Germany. Before implementing the above-mentioned systems to German emergency unit all of them need further development. Furthermore a scientific verification of the efficiency and the safety of triage-systems is necessary.