A dynamic blood glucose data acquiring device and a host are provided, wherein the collecting device comprises a portable host and a probe assembly the probe assembly includes two glucolase micro electrode needles and a first circuit board a first electrode terminal is provided on the first circuit board the host includes an outer shell and a second circuit board which is located in the outer shell, and a second electrode terminal is provided on the second circuit board the outer shell further includes a probe mounting position and a fixing structure the probe assembly is mounted into the probe mounting position in such a way that the glucolase micro electrode needles are projected out of a lower surface of the outer shell when the probe assembly is mounted into the probe mounting position, the first electrode terminal is electrically connected to the second electrode terminal.
