The invention discloses a closet device based on internet of things. The closet device comprises a communication module, a code reader module, a storage module, a calculation module and a power module. The communication module is used for providing an internet connection function. The code reader module is used for reading information on tags of clothes. The storage module is used for storing the information of the clothes read by the code reader module. The calculation module is used for finishing an intelligent match recommending function according to the information of the clothes stored by the storage module. The power module is used for supplying working power. The invention further discloses a closet system of the closet device based on the internet of things and an intelligent match recommending method for the closet system. The clothes, including upper garments, shoes, hats, scarves, neckties, shawls, belts, jewelries and other accessories, in the closet can be counted automatically by the closet device based on the internet of things. Remote access of the closet can be realized by the system of the closet device based on the internet of things, and the closet can be connected to a cloud server. By the aid of the intelligent match recommending method, when a user purchases clothes outside, the user can acquire purchase match recommending information from the closet and makes a purchase selecting decision; and before the user goes travel, the user can acquire travel match recommending information from the closet and selects clothes for traveling.