Abstract: The present application relates to the technical field of incubators, and discloses an egg incubator base including: a driving mechanism, a water supply device, a base for holding eggs, and a rotary seat for driving the eggs to rotate. Cooperation between a first sub-cavity, a second cavity and the water supply device in an embodiment of the present application can provide the egg incubator with two different humidity environments to operate without opening the egg incubator, to achieve the requirements of different environmental humidity for different time periods of the egg incubator. Secondly, the present application also provides a driving mechanism in the second sub-cavity, so that the installation space in an accommodating cavity can be further optimized.