In this work, we utilize multi-hop data fragmentation in energy harvesting wireless sensor networks (EHWSN) for improved security and routing. 1 Data fragmentation is a secure data management and data provisioning technique used in unattended sensor networks. However, it compromises energy efficiency for better protection, possibly decreasing the lifetime of a traditional sensor network. Instead, it has potentials to be used in EHWSN, which allows better energy utilization for each sensor node while security of sensed data remains an important factor. In our work, we consider how data fragmentation can be applied in EHWSN, and propose a multi-hop data fragmentation method suitable for EHWSN