Fire fighting and disaster relief are statutory tasks for firefighters. Although firefighters specialize in fire protection, "prevention is better than cure" can fully explain that fire prevention is the most fundamental solution. Collecting and analyzing information from actual fire case investigation data can reveal the cause of the fire. The research data are based on fire investigation cases in the Shanjiao Fire Squad area of Taoyuan City from 2017 to 2019. Use relevant literature and descriptive statistics to identify possible fire factors, and use regression analysis to understand the relationship between relevant time points and events. Weed and waste fires are not only affected by area, month, and time, but are also closely related to temperature and humidity. In addition, the time required to control the fire, the time required to extinguish the fire, and the burning range are closely related.