Fluid system, biochemical analysis and detection platform and fluid operation method

A fluid system, comprising:

• one or more first main flow paths configured to be connected with at least one reagent storage chamber;
• a second main flow path;
• a reaction flow path comprising a flow cell;
• a bypass flow path connected in parallel with the reaction flow path;
• a third main flow path;
• one or more branched flow paths;
• and
• a plurality of switching components, the plurality of switching components comprising:
• a first switching component, which is connected to the one or more first main flow paths, the second main flow path and at least one of the one or more branched flow paths, and is configured such that the second main flow path is selectively communicated with any one of the one or more first main flow paths and the at least one of the one or more branched flow paths, while the remaining flow paths connected with the first switching component are disconnected;
• a second switching component, which is connected to the second main flow path, the reaction flow path and the bypass flow path, and is configured such that the second main flow path is selectively communicated with either one of the reaction flow path and the bypass flow path, while the remaining flow paths connected with the second switching component are disconnected;
• and
• a third switching component, which is connected to the third main flow path, the reaction flow path and the bypass flow path, and is configured such that the third main flow path is selectively communicated with either one of the reaction flow path and the bypass flow path, while the remaining flow paths connected with the third switching component are disconnected.