There is a parking space in the residential property that says no parking by non-management personnel? Is it reasonable and legal?

it's illegal. the parking spaces in the residential area belong to all owners, and can't be restricted to managers.

according to article 66 of the regulations on property management, in case of any of the following acts, the real estate administrative department of the local people's government at or above the county level shall order it to make corrections within a time limit, give it a warning and impose a fine in accordance with the provisions of the second paragraph of this article; The proceeds will be used for the repair and maintenance of the * * * used parts and facilities of the property in the property management area, and the rest will be used according to the decision of the owners' meeting: (2) occupying or excavating roads and sites in the property management area without authorization, which will damage the interests of the owners.