The invention discloses a data calling method and device for a data source supplier. The data calling method comprises the following steps: marking a calling state label for a data source supplier according to a first preset rule; setting calling priorities of the data source suppliers according to a second preset rule, wherein the calling priorities refer to a calling sequence of the data sourcesuppliers; receiving a data calling request of a user; and determining a calling result of the data source supplier according to the calling state label and the calling priority, and returning the calling result to the user. According to the data calling method and device, the technical problem of incapability of providing stable data calling services for users due to lack of effective managementon data source suppliers in a data calling method in related technologies is solved. According to the data calling method and device, the purpose of effectively managing the data source supplier is achieved, so that the technical effect of providing stable data calling service for the user is achieved.