Multi-split system

The utility model discloses a multi-split system which comprises an outdoor unit and a plurality of indoor units, the outdoor unit and the indoor units are connected through a branch pipe, the branch pipe comprises a main pipeline connected with the outdoor unit and a plurality of branch pipelines communicated with the main pipeline, and the indoor units are connected with the branch pipelines in a one-to-one correspondence mode through connecting pipes. Wherein a plurality of connecting pipe sections are formed on the branch pipeline in the axial direction of the branch pipeline, a limiting part is formed between every two adjacent connecting pipe sections, and all the limiting parts are formed on the inner wall of the branch pipeline and extend in the center direction of the branch pipeline; the limiting part is used for limiting the connecting pipe inserted into the branch pipeline, the installation accuracy is improved, construction of operators is facilitated, the installation efficiency is improved, the