The present invention discloses an improved catalyst for selectively disproportionating improved toluene and its process. Said process features that the zeolite catalyst is prepared through dripping oil into aluminium phosphorate adhesive and its X-ray diffraction pattern has the characteristic intensity at particular Bragg corner. It is optimal that the said catalyst is selectively precoked before toluene is disproportionated. Its advantage is its improved selectivity in preparing p-toluene.