The objective of this paper is to understand the trend of construction disasters occured at thepresent stage in Taiwan and find out the prevented way. 677 investigated reports which included826 workers of construction serious occupational disaster from 1983-1988 in Councill of LaborAffairs. Executive Yuan, R.O.C. were collected and analyzed in detail. The items of eachanalytical report are foundational information of unit and worker, passing, form, and cause ofdisaster.The results reveal that (1) The workers whose age between 30 and 40; working age within100 days have the highest ratio of casualty, 29.1 and 51.7 respectively. (2) The timedistribution of disaster of the top two ratio are 9:00-11:00 (24) and 15:00-17:00 (28). (3)The order of disaster-form is firstly, falling and rolling down (40.8); secondly, electricaldisaster (23.5); and thirdly, structural body's tumbel-down or collapse (17.0). (4) The highestcasualty cause in transmitter is the equipment of construction (28.9). (5) Unsafe equipment andtechnique (38.2), and insufficiency of safe facilities (32.4) are the top two ratio in direct cause.(6) unsafe activity is the first factor (68.5) in direct cause.