Abstract: The present invention provides a polymer pin type insulator made of a polymer material and a method of manufacturing the same. The method of manufacturing a polymer pin type insulator, includes the steps of: forming an inner core which is made of an insulating material and has a threaded hole engaged with a pin coupled with a steel cross-arm or a wooden crossbar of an electric pole; sanding the inner core using a sanding solution to enlarge a surface area of the inner core; applying an adhesive onto the inner core; and forming a polymer housing, which constitutes an outer appearance of the polymer pin type insulator and is provided with an electric wire support groove at an upper portion thereof, by vacuum-injecting a polymer material onto the inner core. The method of manufacturing a polymer pin type insulator is advantageous in that the design of a pin type insulator can be very easily modified depending on the requirements of users and the use conditions of the pin type insulator.