The design of "photosynthetic building block N" leaping apartment aims to break through the traditional decoration mode and create a personalized "shared apartment" that is most suitable for urban young people to live in ". The design scheme is based on the apartment on the inner floor of a residential area in Zibo City. The total construction area of the apartment is 240m ², and the usable area in the apartment is 212m ². The meaning of "photosynthesis" follows the principle of "green energy saving", "building blocks" represents the lifestyle of "shared apartment", "N" represents the diversification and personalization of decorative styles, and also represents the infinite possibilities of the future Internet smart home. The interior decoration is based on intelligent home furnishing and based on the principle of "all-encompassing and respecting individuality". The first floor is defined as the Nordic light luxury style, the second floor is the simple Japanese style, and the third floor is the "new Chinese style" style that collides with modern design concepts. The three spaces are progressive, complementing each other and each has its own merits. The design adheres to the core idea of "creating smart, comfortable and beautiful homes for urban young people", giving each space personality, vitality and vitality.