Basing on experimental advanced superconducting Tokamak (EAST), we have researched relation between bootstrap current and α-induced toroidal Alfvén eigenmode (αTAE, α is a measure of plasma pressure gradient), which is investigated, in this paper, for the EAST tokamak operation condition with the bootstrap current. Our results show that the αTAE may exist in a relatively broad region of minor radius, where a large bootstrap current density is observed. In the presence of energetic particles, produced by the NBI experiments, our MHD-gyrokinetic hybrid simulations demonstrate that this quasi-marginally stable αTAE (within MHD description) can be readily destabilized by the kinetic compression upon the wave-particle resonances. tokamak, bootstrap current, Alfvén eigenmodes, energetic particles