The invention discloses a purple light pipe sealing tool and a sealing method thereof, the invention relates to the technical field of violet light tubes, include a body part, the head of the main body part is provided with a push rod cavity and a boss, the pusher rod cavity is provided with a section of internal thread and is threadably connected with the pusher rod, A manufacture method of thatinvention avoids the low manufacture efficiency in the prior manufacturing method, Electrodes are susceptible to damage, depth of parallelism between electrodes is poor, the discharge between the pinand cathode is uneven, When the electrode and the glass tube are pressed and sealed, the positive pin and the cathode are discharged uniformly, the performance of the discharge tube is improved, and the work efficiency is improved.