Provided are a jig for uniformly applying a drug liquid to a microneedle, and a method of applying a drug to a microneedle using same. Grooves of a number corresponding to the number of rows of small needles of a microneedle are formed in the surface of a flat plate jig or of a roller-like jig, and a drug liquid is filled and held in the grooves. The drug liquid is applied to the microneedle by inserting the small needles of the microneedle into the surface of the drug liquid held in the narrow grooves, and immersing the small needles in the drug liquid. By this, the drug liquid is uniformly applied to the small needles of the microneedle without unevenness between the central section and the peripheral section of each microneedle, and thus the microneedles having good quality can be easily manufactured.