Provided are a microneedle with excellent performance and a method for manufacturing the microneedle. A microneedle array in which a polyglycolic acid is used as a material, crystallinity of the polyglycolic acid is 21% or more and axial contraction rate of tips is 99 % or more, and a manufacturing method in which a polyglycolic acid are injection-molded at a cylinder temperature of 230 - 280 °C, a metal mold temperature of 60 - 130 °C, and an injection pressure of 1000 - 1500 KPa so as to manufacture a microneedle array in which crystallinity of the polyglycolic acid is 21 % or more and an axial contraction rate of tips is 99 % or more.
