The invention discloses an MQTT-based cloud pushing method and a MQTT-based cloud pushing system. A developer in the invention registers in a cloud pushing system and applying for a cloud pushing permission; corresponding cloud pushing permission information is configured in an application server; an intelligent terminal uses an integrated message for developing SDK, provided by the cloud pushing service to push a service; the intelligent terminal establishes reliable connection, registers the equipment and subscribes to a theme with the cloud pushing system on the basis of MQTT after being started; the application server releases a message to be pushed to the cloud pushing system; the cloud pushing system performs necessary permission validation to the message to be pushed; the cloud pushing system pushes the message to be pushed to all intelligent terminals which subscribe to the theme or some intelligent terminal which registers the Rid; the intelligent terminal transmits a confirmation message to the cloud pushing system after successfully receiving the message to be pushed. The method and the system of the invention could ensure an internet application developer and an Internet of Things application develop to conveniently and fast integrate message pushing services.