Generally, it is most appropriate to attend the training for about 2-4 months. The training time is too short and there is too much knowledge to learn. If the training time is too long, you will eventually get tired and your review status will get worse. Registration for the PMP exam is usually carried out two months before the exam, which means that you usually start appropriate training time before the exam registration, so that you will have professional teachers to guide you when you register in Chinese and English, which will be smoother.