A virtual reality system is provided. The virtual reality system includes a host device and a head mounted display apparatus to be worn by a user. The head mounted display apparatus includes a first wireless module, a second wireless module, a multimedia module, a multi-sensing module, and a peripheral hub. The multimedia module receives multimedia content from the host device through the first wireless module. The multi-sensing module obtains sensing information regarding the head mounted display apparatus and the user. The peripheral hub receives communication data from the host device through the second wireless module, and provides the sensing information to the host device through the second wireless module.