The invention discloses a hierarchical 
accident emergency deduction 
system, comprising an integrated drilling unit which includes a function test unit, a drilling training unit and a drilling monitoring unit, wherein the function test unit comprises a desktop deduction unit, a drilling guiding and 
control unit, an on-line 
communication unit, an emergency duty unit, am emergency command unit, an auxiliary decision-making unit, an information issuing unit, a mobile application unit, a three-dimensional webpage unit and a GIS unit. Based on typical emergencies, and in combination with on-site video images, geographic information and virtual 
simulation scenes, the hierarchical 
accident emergency deduction 
system represents the reality of the starting, development and ending process of an emergency, and the emergency handling scenes requiring multiple role cooperation including personnel transfer, 
material distribution, commanding and coordinating, etc., allowing participating personnel to be exposed to real and nervous conditions of an emergency, and feel tense 
atmosphere on the scene and 
time pressure caused by the emergency, thereby truly realizing 
emergency training teaching, interactive coordination and performance evaluation 
simulation.