Abstract: Objective To understand the status of life behavior of employees of a petrochemical company in Xigu District, Lanzhou. Methods A total of 8 443 active and retired employees aged 20-65 in a petrochemical company in Xigu District of Lanzhou city in 2019 were selected as the research objects. The health status was investigated by questionnaire survey, and the ratio or composition of qualitative data was expressed. Results The prevalence rate of chronic diseases (hypertension, stroke, hyperlipidemia and obesity) was 22.3%; the diet structure and lifestyle were not reasonable, the diet was spicy, high-salt and high-fat diet was 44.6%, smoked and preserved food was 49.7%, and the intake of milk, dairy products and eggs was low. Only 7.0% and 10.1% of employees reached the daily intake standard; 79.3% of workers spend more than 2 hours a day sitting quietly (watching TV, surfing the Internet, playing mahjong, playing cards, etc.), 25.9% exercise regularly. The overall smoking rate was 41.7%, higher among males than females, and 52.4% among drinkers. Univariate analysis showed that gender, age, occupational status, smoking, drinking, intake of vegetables and fruits, milk and dairy products and other dietary structure had statistical significance difference in chronic diseases related to life behaviors (P<0.05). The results of multi-factor analysis showed that gender, age, occupation, diet structure and so on had important influence on chronic diseases related to lifestyle behavior of workers. Conclusion The lifestyle of the employees of an oil company in Xigu district of Lanzhou city is not reasonable and has not yet formed a healthy lifestyle. Measures should be taken to address the related behavioral factors, while health education and publicity should be done, the health consciousness of residents should be strengthened, and the healthy lifestyle should be promoted.

Key words: lifestyle behavior, physical conditional, the current investigation