The invention relates to a method for realizing an 
interactive television watching effect enhancing 
system based on 
metadata control. An extensible 
metadata dynamic driving model is constructed; key information, such as the time position for effect enhancement, the type of support equipment, an action response manner and a 
data provider, is defined as standardized 
metadata; furthermore, the metadata is allowed to be dynamically extended in an operation process; parameters are transferred to effect enhancement equipment through play equipment used by a watcher, such that the working state of the effect enhancement equipment is dynamically controlled; besides provision of light, the sound effect, embedded advertisements and object introduction associated with a film and television content scene, associated information, such as comments and plot 
branch control, input by users in a watching process in real time, is also allowed to be dynamically published; the effect that the same film and television content can be universally applicable in different environments can be realized; and the 
interactive television watching effect enhancing 
system having the standardability, the 
interconnectivity, the intercommunity and the extendibility is constructed.