A scheme of wireless data network system on spacecraft based on Bluetooth technology is presented.Aimed at the inconvenience of space craft design caused by cable network.A structural design of active-standby network which has fault-tolerant ability is also presented.Based on environmental experiments of high and low temperature cycle and tolerance of electronic radiation on BlueCore chip.Some practical analysis on spatial application of Bluetooth technology are offered.The conclusion is that this chip can work at the temperature range of-70～100 ℃

and can tolerate the electronic radiation up to 26 krad（Si）

which shows that it can be applied in the spatial environment

and the data and analysis offered can be employed as the reference to the overall design of spacecraft and engineering application.