The invention provides an analgesic medicament, which particularly relates to a dripping pill which contains gastrodine and a process for preparation. The invention particularly relates to a dripping pill which contains acetyl gastrodine and a process for preparation. The invention overcomes the shortcomings of the prior dripping pills that pure natural degrees of findings which are used by the prior dripping pills are not high, and chemosynthesis findings which are commonly used are not in food additives catalogs of some countries, and tastes of the dripping pills are worse. The invention is a pharmaceutical preparation whose natural degree is higher, safety is stronger, and side effect is lower.