  The local pulsar and its progenitor, SNR, can together accelerate the
positron, electron and nuclei to very high energy. The famous excesses of
positron(nuclei) above $20$($200$) GeV possibly come from such kind of local
source. This hints that the primary electron should also hold "excess" above
$200$ GeV, synchronously accelerated along with the nuclei. The recent precise
measurement of sharp dropoff at 284 GeV of positron by AMS-02 experiment takes
chance to study this expected electron excess. In this work, the
spatially-dependent propagation with a local source is used to reproduce the
spectrum of positron, electron and proton. When considering the dropoff at 284
GeV of positron, a sharp bump structure for primary electron above 284 GeV is
required to fit the total spectrum of positron and electron. Then we
systematically study the common origin of the excesses of positron, electron
and nuclei from Geminga pulsar and SNR. Those excesses can be reproduced under
this unified single-source model. Lastly, we hope that the fine bump structure
can be observed to support our model by AMS-02 experiment in future.
