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The gravimeter based on atom interferometry has potential wide applications on building gravity networks and geophysics as well as gravity assisted navigation.Here,we demonstrate experimentally a portable atomic gravimeter operating in the noisy urban environment.Despite the influence of noisy external vibrations,our portable atomic gravimeter reaches a sensitivity as good as 65 μGal/√Hz and a resolution of 1.1 μGal after 4000 s integration,being comparable to state-of-the-art atomic gravimeters.Our achievement paves the way for bringing the portable atomic gravimeter to field applications.