A portable negative-pressure device includes a housing, a piston, a barrier wall, and a spring mechanism to form a first liquid storage space and a second liquid storage having a compressible room for forming a negative pressure source. In the situation of that the first liquid storage space has exudates, the portable negative-pressure device can still maintain a sufficient negative pressure by continuously compressing the piston, and the second liquid storage space will provide an additional liquid storage space.本發明係有關於一種攜帶型負壓裝置，其包含一殼體、一活塞、一阻隔壁與一彈簧機構，以形成一第一儲液區以及可壓縮形成負壓源之一第二儲液區。在該第一儲液區已儲存滲液的情況下，仍可持續藉由壓縮活塞以維持該攜帶型負壓裝置之足夠負壓，並且該第二儲液區可提供額外之儲液空間。
