The present invention relates to a drainage bag support apparatus that has a trunk belt, one or more support straps, and additional means to connect the trunk belt and the support straps together, to adjust the support strap, and to attach a drainage bag. The apparatus of the present invention allows one to adjust and lock the length of the support strap, to change the positions of the trunk belt and the support straps, and to use one or more drainage bags. Methods of using the drainage bag support apparatus include securing the trunk belt around an individual and securing one or more drainage bags to the drainage bag support apparatus. Kits that provide the components of the drainage bag support apparatus to be used along with at least one drainage bag are also described herein.