In order to investigate fine particulate matter(PM2.5)pollution characteristics and the effects of meteoro-logical factors on PM2.5 in Jixian county of Tianjin,PM2.5 mass concentrations in 2013 were collected and PM2.5 pol-lution characteristics were analyzed in detail. Then PM2.5 mass concentration was monitored and recorded in typical weathers of summer. With synchronous meteorological data,the associations between PM2.5 mass concentration and meteorological factors were studied by using linear regression and correlation analysis methods. The results show that PM2.5 mass concentration is remarkably high in winter and relatively low in summer. The rate of exceeding allowable limit reaches 45%in summer and daily average variation of PM2.5 mass concentration shows a distinct bimodal pattern. In addition,PM2.5 mass concentration is significantly affected by temperature,relative humidity,wind speed, wind direction and rainfall,but not significantly associated with atmospheric pressure. Besides,visibility presents an exponential decay trend as PM2.5 mass concentration increases. The results possess certain scientific reference for syn-ergetic prevention and control of air pollution in the Beijing-Tianjin-Hebei region.