The reasons for frequent accidents in the construction industry are very complicated, mainly including: the construction safety management mechanism does not adapt to the current situation of safe production; Cross-management of building safety is prominent; Construction enterprises have extensive management and low management level; The construction technology and safety technology are complex and there are many unstable factors; The overall quality of the construction team is low; Building safety research lags behind and so on. Based on the author's working practice, this paper makes an in-depth study on the safety management methods and safety technologies of construction, with a view to reducing the accident rate of construction safety and improving the safety management level of construction. The cut-in point of construction safety analysis paper Safety needs investment, and safety also brings benefits. In the process of building construction, safety not only brings economic benefits with value factors, but also brings social benefits with non-value factors (health, stability, happiness, etc.). Safety has two basic functions: First, it can directly reduce or avoid the damage caused by accidents or dangerous events to people, society and nature, and realize the function of protecting human wealth and reducing useless losses and losses; Second, the process of ensuring working conditions and maintaining economic value-added can realize the function of indirectly adding value to society. The first function is called "clearing" and the second function is called "essential gain". Whether it is "essential gain" (safety creates positive benefits) or "scavenging" (safety reduces negative benefits), it shows that safety creates value. This also shows that building safety maintains the value creation function of the system and embodies its own value. Architectural papers written through the above breakthrough points can usually meet the basic mandatory requirements of building safety, and when the architectural papers are published again, they will not cause serious mistakes and will be denied by the whole article.