The invention relates to the technical field of lantern machining. A lantern end surface grinding machine comprises a base, a supporting sleeve, a grinding head and a motor, wherein the motor comprises a motor shell; a rotating shaft is provided with a shock absorption structure; the base is provided with a plurality of rubber pads; the motor shell is provided with a pull handle lever; the pull handle lever is provided with a sleeve; an elasticity adjustment mechanism is arranged between the pull handle lever and the sleeve, and comprises a base pipe, a clamping layer and a pre-tightening force adjustment mechanism; the clamping layer consists of a plurality of friction strips; the friction strips are provided with a plurality of sliding rods arranged on the base pipe in a penetrating manner; and third springs which drive the sliding rods to move outwards so as to drive the friction strips and the sleeve to press against together are arranged at the inner ends of the sliding rods. The invention has the advantages of being convenient for motor movement during assembling, being good in shock isolation effect, being capable of quickly grinding the end of a lantern in a labor-saving manner and enabling the ground end to be high in surface co-roundness, and the problems of high labor intensity and low co-roundness which are caused by the fact that the peripheral surface of the end of the lantern is ground by artificially holding and rotating the end of the lantern are solved.