PROBLEM TO BE SOLVED: To provide a microneedle which can suppress air bubbles from being contained in the tip of a projection part, and a method of producing a microneedle.SOLUTION: A microneedle 10 has a shape in which a projection part 12 projects from the surface of a substrate 11, and comprises a first portion 22 comprising the tip of the projection part 12, and a second portion 21 comprising the rear face of the substrate 11. A weight average molecular weight of a main component of the first portion 22 is smaller than a weight average molecular weight of a main component of the second portion 21.
