Gun body for radioactive particle implantation gun

The utility model discloses a gun body for a radioactive particle implantation gun. The gun body comprises a gun body, a catheter, an implantation needle, a push rod and a particle cartridge holder, a patient can be treated through the radioactive particle implantation gun, an implantation needle can be accurately inserted into the body of the patient through the gun body of the radioactive particle implantation gun, the cartridge holder groove is formed in the top of the gun body, and a plurality of sealed seed sources are sequentially arranged in the connected particle cartridge holder. The sealing seed source can be rapidly filled through the tongue, so that the sealing seed source can be continuously implanted into a patient, the implantation efficiency and the treatment effect of the sealing seed source are improved, grooves are formed in the two sides of a clip groove, and one ends of springs fixedly connected in the two grooves are fixedly connected with limiting rods; the stop block arranged at one en