Tinning structure and tinning method based on metal ceramic cavity

The invention discloses a tinning structure based on a metal ceramic cavity and a tinning method, and relates to the technical field of electronic packaging. The tinning structure based on the metal ceramic cavity comprises a tinning piece, a positioning base and a tinning base. The tinning piece comprises a tinning main body, tinning needles and positioning needles, the tinning main body comprises a plate body and a side wall, the plate body and the side wall jointly form a containing cavity, the multiple tinning needles are arranged in the containing cavity at intervals, and the multiple tinning needles are used for being in one-to-one correspondence with points to be tinned in the metal ceramic cavity; the positioning base comprises a containing groove and a first positioning hole, one end of the positioning pin is connected with the side wall, and the other end of the positioning pin is used for being inserted into the first positioning hole. The tin feeding base comprises a tin containing groove and a se