In order to reduce the losses during logistics of aquatic products and improve the informationization level in aquatic products cold-chain logistics, a wireless sensor network (WSN) based on real time monitor system was proposed for aquatic products cold-chain logistics with ZigBee protocol and CC2530 wireless sensor SoC. The system included a sensor node designed for temperature data collection, a coordinator used for data upload and ZigBee network organization, a remote management system developed for cold-chain real time monitor, data storage and ZigBee network control. The system test under cold-chain logistic environment proved that it could be equipped in the whole process of the aquatic products cold-chain and the monitoring node was reliable under -18℃. The communication performance test showed that the node with a -3 dBm RF power achieved a 8.4% or lower packet loss rate within a 30 m communication distance, the energy consumption of data communication was low.