A percutaneous medication device, comprising a syringe to be filled with medical liquid and a needle formation attached to a leading-end of the syringe is provided. The needle formation comprises a needle formation body, from the surface of which a needle projects and a cover portion covers a leading-end of the needle formation body. The needle is inserted into a through-hole formed at the leading-end of the needle formation body and fixed by a fixation member. The needle formation body is mated to the cover portion, a space is formed between an inner surface of the cover portion and the leading-end of the needle formation body, and the needle projects from the leading-end surface of the cover portion through a needle insertion hole formed at the leading-end of the cover portion.
