The invention discloses a method of constructing a big-data 
service model based on page dragging technology. The method realizes 
visualization setting of each node parameter in the 
service model through the page dragging technology, establishes relationships between nodes, forms the 
workflow model, and specifically includes the following steps: establishing a big-
data platform user, namely an executor of the 
service model; configuring data sources; establishing the model, wherein the complete service model is constructed through dragging each 
service component; carrying out trial running of the model; releasing the model, wherein a model state is callable; carrying out model scheduling setting for periodically executing the service model; and running the model, wherein running operation of the model is executed according to time points of scheduling setting. According to the method, big-data services can be converted into 
visualization workflows of the component nodes for setting, development work of big-data developers can be simplified, and 
service personnel and data analysts can be enabled to participate in 
automation configuring of the workflows of the big-data services.