The invention relates to a quadruple long-acting medicine composition and application thereof to pain treatment, in particular to the quadruple long-acting medicine composition. The medicine composition contains lappaconitine, tetrahydropalmatine, fumaric acid and succinic acid of the treatment and / or effective quantity as active ingredients. Compared with a composition formed by single ingredients or two ingredients or three ingredients, the quadruple long-acting medicine composition has the characteristics of good water solubility, good curative effect, low toxic and side effects and the like. The quadruple long-acting medicine composition can be used for preventing and / or treating diseases relevant to the pain; the pain includes tumor pain, pain of cancer patients after chemotherapy, joint pain, trauma pain, postoperative pain, inflammatory pain, pain caused by drug detoxification or drug addicition and intractable pain due to unknown reasons. The quadruple long-acting medicine composition can also be used for sedation, hypnosis, collaborative anesthesia, antiarrhythmia and the like.