Children present some unique challenges to the therapist regarding treatment. Unlike adult patients, they are obviously still dependent upon the parent for transportation, the payment of fees, and the success or failure of treatment. Thus the parents make the ultimate decision to continue or terminate treatment. But sometimes a parent’s characterological problems are activated by their child’s treatment. These diagnostic problems can be classified as envy, jealousy, competition, and narcissism. When any or all of these unresolved parental issues are touched by the treatment of their child, some parents become determined to sabotage therapy, despite the necessity of the treatment for their child. The author’s intent is to identify the parental characterological issues for sabotaging therapy through both a theoretical analysis and a discussion of the particular methods parents employ to achieve this end. Identification of the various strategies for handling hostile parents and elaboration of various methods that the therapist may employ are discussed when parental sabotaging of treatment becomes a problem. Recommendations for particular interventions are suggested to illuminate the challenges the therapist faces with those parents whose intent is to sabotage treatment.