<p>This invention relates to a device for collecting fluid samples, comprising a collecting part and an electronic unit which at least comprises two electrodes and processors, wherein the electrodes contact the collecting part and the electronic unit can control and regulate the collected sample volume. This device can collect enough samples for test or assay; or the rest sample can be used for the second test. Also, this collecting device can simply indicate the collected fluid is enough by a clear signal. The device is simple to operate and convenient to produce with higher efficiency during practical operation.</p>
