The present invention relates to a method for producing a pork bone extract and a method for sterilizing a pork bone extract. Specifically, it relates to a method for producing a pork bone extract which comprises ultra high temperature (UHT) sterilization at a temperature of 130.degree. C. or below, and a method for sterilizing a pork bone extract which comprises subjecting the pork bone extract to UHT sterilization at a temperature of 130.degree. C. or below. According to the present invention, a pork bone extract with a little burnt odor which can be stored for a long period of time can be provided.