Local time Nov 13^th, several terrorist attacks happened in Paris, including 7 shooting accidents and 6 explosion, there was even hostage incident in the Crane Theatre. The police tookeaction immediately, and shot 3 attackers dead. On news conference of chiefprocurator in Paris, Frenchpolice confirmed that the numbers of dead was increased to 129, and 352 peoplehurt, included 99 people of serious injury. Paris chief procurator said, 7terrorist attackers were both dead, for the attackers were from Belgium, Parisbuilt close relationship with Belgium anti-terrorist department. Material of thesuicide bombs in this attack were madeof TATP, this kind of explosive is called “ Mother of Satan”. The material iseasy to get and cost of manufacture is low, commen detecting methods is hard tofind it.