Abstract: A chemical method of making joints between Bi2223/Ag superconductor tapes was developed. At an end, the silver shield was removed from a Bi2223/Ag tape at one side surface, with that at the other side kept. Two of such tapes were contacted each other with Bi2223 powder filled in the gap to form a joint through proper heat-treatment in a tube furnace. The four-probe method was used to measure the current Ic of specimens. The Ic value of original tape is 40 A and it drops to 28 A after heat-treatment, and the Ic value at joint is 25 A after heat-treatment. Such a result shows that a superconducting joint has been developed. The SEM images of the fracture surface of joint show that its microstructure differs to a certain extent from that of the tape itself, so that the critical current drops at the joint. The testing results of the stress/strain of the joint show that the mechanical properties of the joint is somewhat lower than that of the tapes especially its malleability.