The general multi-level risk decision problem is hardly to be solved by current research. In order to overcome
above drawbacks, a proposition that, knowledge is usually to be represented by holistic judgment is analyzed and proposed,
and the modeling approach and the relative principle for multi-level risk decision are presented in terms of holistic judgment
thinking. In modeling approach, corresponding decision models and decision theorems are constructed to resolve some key
problems such as decision information integrated optimization or prospect value organic synthesis. Simulation results show
that the presented decision models are scientific, reasonable and applicable.