Through the statistical analyses of 100 recent safety accidents in domestic construction projects are conducted, only 29 representative safety accidents are considered to draw a conclusion. The dominant factors that cause safety accidents are generally easy to identify, while the hidden factors must be investigated and studied in detail before drawing a conclusion. In most cases, the superposition and accumulation of recessive factors develop into the cause or inducement of dominant factors, and transform into dominant factors under certain conditions, thereby leading to the occurrence of accidents. Recent safety accident statistics of China are listed in Table 1.