Resistor capable of preventing pin from falling out of jack

The invention relates to a resistor capable of preventing pins from falling out of jacks. The resistor comprises a resistor body, wherein the resistor body is provided with two pole pins; a triangularmetal elastic sheet is fixed on each of the two pole pins; after the pole pins are inserted into the jacks, the triangular elastic sheets can be pressed at the exterior of the jacks; and the pole pins are prevented from falling out of the jacks. 种可以防止引脚从插孔中脱出的电阻，包括电阻本体，电阻本体具有两个极脚，在两个极脚上固定有个三角形的金属弹片，在将极脚插入到插孔中后，三角形的金属弹片能够压在插孔外，进而防止极脚从插孔中脱出。