This article aims to analyze the dogmatic structure of ”activity-adoption negligence” (in German: Übernahmefahrlässigkeit) and intends to find a justifiable answer of its criminal liability. The author objects to the traditional viewpoint of ”bringing forward the liability moment” and develops a new argument: As long as the negligent offender foresees or can foresee he lacks the ability to control possible risks caused by adopting a particular dangerous activity, he cannot assert that his criminal liability should be excused when he still adopts it and causes damages of others thereafter.