The invention discloses a spatial crowdsourcing network node position privacy protection method. The method comprises the following steps: S1 a requester sends a service demand to a server; S2 a worker performs clustering according to his own position; S3 a cluster head generates a virtual cluster center according to cluster member position information; S4 the cluster head randomly selects a cluster member as an acting worker and sends virtual cluster center position information to the acting worker; S5 the acting worker reports the virtual center position information to the server; S6 the server selects the virtual cluster center which is nearest to the service demand spot and assigns the task to the acting worker corresponding to the virtual cluster center; S7 the acting worker forwards the received task to the cluster head; S8 the cluster head assigns the task to the cluster member nearest to the service demand spot; and S9 the cluster member receives the task, performs the task and gives feedback information. The spatial crowdsourcing network node position privacy protection method has the advantages that the principle is simple and the implementation is convenient, the leakage of the worker position privacy is effectively avoided, and the algorithm has a stable and reliable performance.