The paper mainly describes what the simple diagnosis technology is,and to show the pane drawing analysis method using example:fish bone drawing analysis method.

The article introduces the basic principle of causes and effects tracing analysis and seeks each kind of reason in the coal mine casualty,the author through the typical casualty that occurs in the coal mine enterprise,discovers the foundation reason the indirect reason and the essential reason which the accident occurs,clearly showed in the method of fishbone chart.

And,causes for metro collapse accidents were analyzed and fishbone chart about causal factors of metro collapse accidents was constructed.

They draw high risk grade events on heads of arrows of a fish bone chart and low risk grade events on ends of arrows in order to make the fish bone chart to contain two kinds information, event reasons and event risk grades.

This article proposes the risk recognition feature-factor modeling technology, which is set up on the basis of checklist and flow chart.

The Fish Bone Fig analysis of potential risk accident in public space landscape environment

This article will introduce the theory safety engineering to landscape design,the environmental landscape through the use of the Fish Bone Fig.