To overcome the shortcomings of time-consuming and occupying substantial computer resources in time history analysis， this study proposes a fast method based on AISC Design Guide 11 to evaluate serviceability of the footbridge using frequency response function （FRF）. A steel glass footbridge is established. The reliability of FRF method is preliminarily verified by comparing the mid span vertical peak accelerations collected by test and predicted by FRF method under different conditions. The peak accelerations and serviceability assessment of a footbridge under 21 conditions are calculated by two methods to verify the accuracy and efficiency of the FRF method. The results show that the FRF method can save 94.89% of operation time and 87.2% of space taking the results of the time-history analysis as a reference. The predicted peak acceleration is larger than the time-history analysis with 20%. Results of the forecast are conservative and meet the safety requirements. Therefore， the method based on AISC design guide 11 can evaluate the human-induced vibration serviceability of footbridge effectively.