A small-gap needle-cylinder discharge structure was designed to realize the ionic wind by the stable gas discharge in ambient air .A stainless steel needle tip with a diameter of 56.4μm was chosen as the cathode , and a copper cylinder with a diameter of 4 mm and length of 60 mm was used as the anode . The discharge experiment was carried out under the following conditions : the negative high voltage DC power supply with 0~-20 000 V was used as the discharge power supply , the ballasting resistor was 12 MΩ, the discharge resistor was 12 MΩ, the testing resistor was 1 kΩ, and the distance between needle and cylinder was 2.2 mm, without external air flow in ambient air and at room temperature .Stable coro-na and glow discharges were realized by the needle-cylinder structure , which was proved by the Trichel discharge waveform recorded by TDS 1002 B-SC Tektronix oscilloscope , the volt-ampere characteristic curve and the discharge photos recorded by a digital camera .The ionic wind velocity was measured by the testo 405-V1 anemometer .The experiments with different distances between needle and cylinder and dif-ferent values of the ballasting resistor were carried out .The results show that the ionic wind velocity in-creases with the increase of discharge voltage in the corona discharge stage , while it decreases after trans-forming into glow discharge .%设计了一种小间隙针-柱放电结构，通过大气压环境下稳定的气体放电，实现离子风．放电阴极采用针尖直径为56.4μm的不锈钢针，放电阳极采用直径4 mm、长60 mm的紫铜圆柱．放电电源采用0～－20000 V的负直流高压电源，在镇流电阻12 MΩ、放电电阻12 MΩ、测试电阻1 kΩ、针-柱间距2.2 mm、大气压、无外界通入气流、室温条件下进行放电实验．TDS1002 B-SC泰克示波器记录的特里切尔放电波形、伏安特性曲线以及数码相机拍摄的放电发光图像验证了针-柱结构产生了稳定的电晕放电和辉光放电．实验中采用testo 405-V1风速仪进行风速测量．不同针-柱间距和不同镇流电阻阻值的实验结果都表明：在电晕放电阶段，离子风风速随放电电压的增大而增大；进入辉光放电后，离子风流速反而减小．
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