Target tracking problem in DTN (delay tolerant network) networks has been widely concerned. The current strategy is mainly related to the single detector tracking the single destination. This paper presents a distributed target tracking strategy based on multi-detector collaborating, by remote detection mechanisms DTRs (distant tracker records) and close cooperative data exchange mechanism TRs (tracker records) for multi-detector collaborative track. That avoids conflict and redundancy detection to improve track efficiency. Theoretical analysis and experiments verify that the strategy can effectively reduce the tracking steps to improve the success rate as compared to the traditional method.