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 for fixing the outer shell to a human body 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 on the first circuit board is electrically connected to the second electrode terminal on the second circuit board. In the present application, the probe assembly is fixed on the human body via the portable host, and the blood glucose signals are acquired via the glucolase micro electrode needles of the probe assembly, the collection, the processing and the output of the blood glucose signals can be achieved as a result.
