1, the information is small and fleeting. Due to the short advertising time and extremely limited information, alexa's functions have not been fully demonstrated.

2, influenced by the viewing environment, it is not easy to grasp the communication effect. Watching this advertisement requires a suitable viewing environment. Without this environment, the spread of this advertisement is basically blocked. In this environment, the number of viewers, the angle of viewers, the volume of TV and the quality of equipment all directly affect the viewing effect of advertisements.

3, the cost is expensive. First, the alexa voice assistant advertisement itself has high production cost, requires a lot of manpower and has a long cycle; Second, the broadcast cost is high. Different products in different periods, if the selected advertisements are inappropriate, will be counterproductive and have a negative impact on the brand.