Among astronomical intelligent alarm clock and Tmall Elf, Tmall Elf is better. Tmall Elf is a smart alarm clock and actually a smart AI speaker, which contains all the functions of Tmall Elf speakers. We can use it to control smart home appliances, and we can also carry out the linkage of home appliances. Astronomical intelligent alarm clock is a multifunctional time manager for early education to remind students by voice control. Compared with their functions, Tmall Elf is very good.