What is OHSAS18000 occupational safety and health risks we all know, in the way people work activities or work environment, so that there is always a potential hazard, may damage property, harm the environment, affect human health, and even cause injury. These hazards include chemical, physical, biological, ergonomic and other types. It will be the possibility of one or some dangerous consequences caused by the accident and its cause is called risk. Available incidence risk and endanger the scope, size and other indicators to assess the loss. Modern Occupational Safety and Health Administration is the object of the Occupational Safety and health risks. The risk of loss caused by the accident was caused by a wide range, generally divided into the following aspects: (l) staff of life for themselves and their harm to others; (2) the health of workers hurt himself and others (including psychological harm); ( 3) information, equipment and facilities of damages, losses (including loss of a period of time or for a long time can not work properly); (4) the costs of dealing with incidents (including downtime, accident investigation, and other indirect costs); (5) organization, increase the economic burden on employees; (6) Family worker himself and others, friends, community mental, psychological, economic damage and loss; (7) government, industry, the public criticism and accusations; (8) legal accountability and news organization image damage caused by exposure; confidence (9) the investor or the loss of the financial sector; loss (10) organization reputation damage, loss of business opportunities; competitive (ll) products declined; (12) Employee I and others complain, complain, criticize and so on. Occupational Safety and Health accident losses, including direct and indirect losses, loss of cost far more than the cost of health care and disease compensation, that indirect losses are generally much larger than the direct losses. Risk factors that lead to accidents caused by the loss of two categories: personal factors and work / system factors. Personal factors which include: physical / physiological structure of insufficient capacity, such as height, weight, lack of stretching, the material sensitive or have allergies; lack of thinking / mental abilities, such as lack of comprehension, poor judgment, poor sense of direction, etc; physiological stress such as sensory overload and fatigue, contact extreme temperatures, lack of oxygen; thinking or psychological stress, such as feelings of excessive load requirements set in the extreme force / attention, etc; lack of knowledge, such as inadequate training, misunderstanding indication; lack of skills such practice is inadequate; improper driving force, such as improper colleague competition. Work / system factors include: guidance / supervision inadequate, such as unclear or conflicting delegate responsibility, lack of decentralization, policies, procedures, practices or guidelines given insufficient; lack of engineering design, such as lack of human factors / ergonomics considerations, Run insufficient preparation; inadequate procurement, storage of materials or transport materials such as incorrect, inadequate project risk identification; inadequate maintenance, such as oil and inadequate maintenance, lack of inspection equipment and other; lack of tools and equipment, such as lack of work standards equipment abnormal wear and tear, abuse or misuse must be seen, on the loss of control is not limited to the scope of individual security controls. Deming and other management scientists found that a company in question, approximately 15% is controlled by the staff, about 85% or more is controlled by management. The loss is not a commercial operation "inevitable" cost, but can be prevented and eliminated by management.