Abstract: The present invention relates to a lock assembly with a changeable combination lock which can be used for luggage cases or the like. The lock assembly comprises a lock member having a plurality of grooves corresponding to a series of dial members and a clasp member having a tongue for engaging or releasing from the grooves of the lock member. The dial member has an inner member containing an aperture so that the direction of the groove can be easily changed on the face plate of the dial member for insuring the safety of the luggage case.