Control method and system of set top box, and storage medium

The embodiment of the invention discloses a set top box control method and system and a storage medium, the set top box control method is applied to the control system, and the control system comprises a service platform, a set top box, a third-party application platform and terminal equipment; the set top box communicates with the service platform through the first interface; the set top box communicates with the third-party application platform through the second interface; the set top box communicates with the terminal equipment through the third interface; the set top box obtains the third-party application from the third-party application platform; when the third-party application is operated, the set top box detects voice information and sends the voice information to the service platform; the service platform generates a control instruction according to the display content of the current interface corresponding to the third-party application and the voice information, and sends the control instruction