Failure of critical nodes may partition wireless sensor networks（ WSNs） into disjoint segments

which hinders the networks operation. And in many applications

the network is deployed in harsh environments

where manual intervention is difficult

thus autonomic recovery of network connectivity is especially important. An autonomic partitioning detection and connectivity restoration（ APDCR） strategy is presented to tolerate the failure of critical node. Firstly

propose a novel algorithm to identify the critical nodes only relying on the position of 1-hop neighbors and some 2-hop neighbors

and then select an appropriate backup for each critical node

backup initiates the recovery algorithm when it find out the failure of a critical node. Finally

present 2-APDCR to handle the case that two nodes fail simultaneously. Validity of the proposed algorithms is proved through simulation experimental result.