In order to reduce the influence of micro vibration on the coupling of spatial light to fiber, its coupling characteristics are studied and a new kind of conical receiver is put forward. Both the total reflection characteristics and the coupling performance of the tapered receiver are discussed theoretically. The result shows that, in the micro vibration environment, the coupling efficiency of the new tapered receiver is higher than that of the conventional fiber receiver. Then, the experiments present that when the amplitude increases from 0 to 280 μrad, for the ordinary optical fiber receiver, the coupling efficiency decreases rapidly from 95% to 10%. On the other hand the efficiency factor only drops to 55% with the new tapered optical fiber receiver. The results show that, under the condition of micro vibration, the new receiver can effectively improve the coupling efficiency.