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The single pulse observation of PSR J1752+2359 at 1250 MHz made using the Five-hundred-meter Aperture Spherical radio Telescope (FAST) is presented.We show that the pulsar exhibits two distinct emission states:a normal state with continuous normal pulse emission and a rotating radio transient(RRAT)-like state with sporadic emission.This makes PSR J1752+2359 the third pulsar that exhibits switching between RRAT-like and pulsar-like states.Our data show that,during the observation,20 per cent of the time for this pulsar was in the normal state and 80 per cent in the RRAT-like state.A quasi-periodic switching,with a periodicity of around 568 spin periods,between the two states was observed.The pulse energies for the two states both follow log-normal distributions.We demonstrate that the polarization profiles and the linear polarization position angle (PA) swings differ significantly between the two states.There is a phase offset of about 0°.35 between the pulse profile peaks of the two states.We argue that the emission geometry in the magnetosphere may be different for the two states.