A case for a secondary battery, the case comprising: a case body having a space for receiving an electrode assembly; and a shock-absorbing cap coupled to the bottom of the case body, wherein the shock-absorbing cap includes: a secondary shock absorber, the secondary shock absorber being configured to distribute and transmit shock applied to the bottom of the shock-absorbing cap; and one or more connecting protrusions on the edges of the shock-absorbing cap, the connecting protrusions extending along and covering a side of the bottom of the case body, wherein the secondary shock absorber includes a plurality of shock-absorbing recesses configured such that the bottom of the case body and the bottom of the shock-absorbing cap are spaced apart at least by the depth of the shock-absorbing recesses when the shock-absorbing cap is coupled with the case body, wherein the shock-absorbing cap further includes connection ribs between the shock-absorbing recesses, and wherein the connection ribs and the edges of the shock-absorbing cap contact the bottom of the case body such that shock applied to the bottom of the shock-absorbing cap is distributed and transmitted to the case body through the connection ribs and the edges. a case body having a space for receiving an electrode assembly; and a shock-absorbing cap coupled to the bottom of the case body, wherein the shock-absorbing cap includes: a secondary shock absorber, the secondary shock absorber being configured to distribute and transmit shock applied to the bottom of the shock-absorbing cap; and one or more connecting protrusions on the edges of the shock-absorbing cap, the connecting protrusions extending along and covering a side of the bottom of the case body, wherein the secondary shock absorber includes a plurality of shock-absorbing recesses configured such that the bottom of the case body and the bottom of the shock-absorbing cap are spaced apart at least by the depth of the shock-absorbing recesses when the shock-absorbing cap is coupled with the case body, wherein the shock-absorbing cap further includes connection ribs between the shock-absorbing recesses, and wherein the connection ribs and the edges of the shock-absorbing cap contact the bottom of the case body such that shock applied to the bottom of the shock-absorbing cap is distributed and transmitted to the case body through the connection ribs and the edges. a secondary shock absorber, the secondary shock absorber being configured to distribute and transmit shock applied to the bottom of the shock-absorbing cap; and one or more connecting protrusions on the edges of the shock-absorbing cap, the connecting protrusions extending along and covering a side of the bottom of the case body, wherein the secondary shock absorber includes a plurality of shock-absorbing recesses configured such that the bottom of the case body and the bottom of the shock-absorbing cap are spaced apart at least by the depth of the shock-absorbing recesses when the shock-absorbing cap is coupled with the case body, wherein the shock-absorbing cap further includes connection ribs between the shock-absorbing recesses, and wherein the connection ribs and the edges of the shock-absorbing cap contact the bottom of the case body such that shock applied to the bottom of the shock-absorbing cap is distributed and transmitted to the case body through the connection ribs and the edges.