Measurement of ppbar FFs at BESIII

The structure of the proton can be understood through the study of its electromagnetic (EM) form factors. Due to the low luminosity achieved up to now, few data exist on the proton form factors in the time-like region and only a very coarse determination of the individual electric and magnetic form factors (or its ratio) has been possible so far. BESIII (Beijing Spectrometer III) at BEPCII (Beijing Electron Positron Collider II) has a better performance in detecting p anti p, n anti n, Λ anti Λ and so on. We studied the feasibility of measurement of form factors of proton at BESIII. In 2014 and 2015, BESIII has collected large e+e* scanning data samples with a total luminosity of 525.5 pb*1. With these data samples, the renovation of the status of proton form factors is foreseen.