Microfluid detection device, fluid quality monitoring equipment and component replacement method

The embodiment of the invention provides a microfluid detection device, fluid quality monitoring equipment and a part replacement method, the microfluid detection device comprises a device shell, a first magnet array is arranged on a first inner side part of an accommodating cavity of the device shell, and a first liquid hole group communicated with the outside is formed in an opposite second inner side part; the loading bin is detachably provided with a micro-fluidic component; a second magnet array is arranged on a first outer side part of the loading bin, and a second liquid hole group is formed in a second outer side part opposite to the second magnet array; when the loading bin reaches a target position in the accommodating cavity, the first and second liquid hole groups and the first and second magnet arrays respectively correspond in position; repulsive force between the magnet arrays presses the loading bin to the second liquid hole set to be in sealed communication with the first liquid hole set. The