To provide a hypodermic tissue metabolism accelerating tool which has a sufficient pressure reducing effect on skin with a simple structure, and is never easily peeled.

In a hypodermic tissue metabolism accelerating tool for working a negative pressure onto skin to metabolize the hypodermic tissue, it is molded into a hollowed hemispherical form by use of a synthetic resin, and has flexibility substantially reversible by pushing its top part 1a, and also a strength having hemispherical shape holding property even by internal pressure reduction. Further, it has an engaging part 2 radially protruded on the inside of its opening periphery 1b.