Method and system for detecting and measuring liquid

A system for measuring a liquid, comprising:

• a microfluidic device configured to contain a liquid to be measured, and comprising a plurality of predetermined measurement regions that comprise a plurality of photosensors;
• a light source configured to irradiate light of constant intensity onto the microfluidic device such that at least one photosensor of the plurality of photosensors receives light passing through the liquid;
• and
• a current measurement unit configured to acquire a plurality of photocurrent values that are output by the plurality of photosensors and measure physical parameters of the liquid according to the plurality of photocurrent values.

A microfluidic device comprising:

• a first substrate and a second substrate opposite to each other, and
• an accommodation space between the first substrate and the second substrate for accommodating a liquid to be measured,
• wherein a plurality of predetermined measurement regions are arranged in the second substrate, and
• wherein at least one photosensor is in the plurality of predetermined measurement regions.