Take the dog to the toilet in time, so that after many trainings, the dog can get used to it. If the puppy excretes outside the toilet, it should be picked up quickly, reprimanded severely and said "no" at the same time, but sent to the toilet.
If it doesn't work in the process of stopping, don't scold when you excrete. Press the dog's head and stick the nose in the wrong place immediately after excretion, emphasizing "no" Let the puppy know that he is wrong. If he hadn't scolded him in time, the puppy wouldn't have understood his fault. We should insist on correcting and scolding when puppies make mistakes in excretion. Maybe the puppy didn't understand why he was scolded at first, but after several repeated trainings, the puppy understood. Dogs that understand quickly can be trained successfully in one day, and dogs that understand slowly can also be trained successfully in one week.