Abstract: To evaluate the pollution level of atmospheric PBDEs in summer in Jinan City, the concentrations of PBDEs in various particle sizes and gas phase were obtained using gas chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS) to analyze particle and PUF membrane samples. The results show that during the monitoring period the average concentrations of PBDEs on TSP, PM₁₀ and PM_2.5 in Jinan City were (224.1±14.0), (156.5±43.7) and (110.2±27.4) pg/m³, respectively; and the top 3 congeners of PBDEs with the highest concentration were BDE209, BDE99 and BDE183. The average concentration of gaseous PBDEs was (54.8±13.2) pg/m³; and the top 3 congeners were BDE209, BDE47 and BDE99. A SPSS 22.0 software was used to conduct the principal factor analysis, indicating that the adsorbed PBDEs on different particle sizes were different:pentabromodiphenyl ether the dominant compound on the TSP, octabromo and decabromodiphenyl ether was mainly associated with the PM₁₀, and pentabromo, octabromo, decabromodiphenyl ether were mainly on the PM_2.5. By comparing the predicted values of the two models with the measured values, it was found that the steady-state model simulation of the air-particle distribution of PBDEs was more reliable than the equilibrium model. Based on the steady model, the PBDEs in Jinan City were near equilibrium state in gas-particle distribution. High-brominated PBDEs were mainly distributed in the particulate form, while the actual concentration of low-brominated PBDEs was different from the model predicted results. For instance, the mass fraction of BDE99 and BDE47 on particles were higher than 50%, indicating that low-brominated PBDEs in Jinan also tended to be adsorbed on the particles. According to the calculations of respiratory exposure levels of PBDEs, the values on PM_2.5 accounted for 49.1% of TSP respiratory exposure, indicating that the influence on children was approximately 1.5 times as many as adults. The total intake of BDE99 for children and adults in Jinan City was 234.78 and 169.57 pg/(kg·d), respectively, which was lower than the suggested maximum intake of BDE99 (260 pg/(kg·d)). According to the PBDEs health risk assessment method of EPA (EPA/540/R/070/002), it was found that the inhalation cancer risk of PBDEs in summer air in Jinan, calculated using the reported parameters, was very low. The results showed that the mass concentration of PBDEs with different particle sizes in the ambient air of Jinan City in summer was at a lower pollution level, and the potential health risks were also lower.