The invention relates to a risk assessment system, in particular to a life risk assessment system. The system comprises personal information acquisition, a risk assessment model and a health improvement guide library, wherein the personal information acquisition comprises collection of assessment object related data including demographic characteristics, physique measurement, life style, family and personal medical history, psychology and constitution. The risk assessment model comprises an information library, a standard library and an algorithm library. The health improvement guide library performs association matching according to assessment results of different risk assessment models, namely, a disease death risk model, a traditional Chinese medicine constitution model and a psychological assessment model, and suggestions (G1...Gk) in a prescription library to produce personalized health improvement guides. The personal information acquired by the system is more detailed, the established models are more comprehensive, and the system is applicable to people in different areas, has independence and has great significance in prediction of disease risk factors.