Abstract
A microfluidic chip capable of accurately micro-sampling and feeding samples is provided, the interior thereof is defined into a microfluidic channel and an air chamber mechanism, the microfluidic channel has a driving section, a sampling section for connecting in-between a sampling slot and the driving section, and a feeding section for connecting in-between a liquid storage slot and the sampling section. The air chamber mechanism includes a driving air chamber located above the driving section, a first valve air chamber located above the feeding section and connected with the driving air chamber, and a second valve air chamber located above the sampling section. A fluidic channel laminate board of the microfluidic chip is equipped with a driving part which can be driven by high pressure gas in the driving air chamber, so as to generate positive pressure pushing force or negative pressure suction thrust for driving liquid flow in the sampling section. Through the structural design of microfluidic channel and air chamber mechanism, said microfluidic chip can be used for carrying out precision sampling of micro liquid.