The invention belongs to the 
resistor technical field, especially discloses a high-power high-stability 
resistor. The 
resistor comprises a strip-shaped plate, a strip-shaped groove, an L-shaped clamping plate, heat 
radiation round holes, a first semicircular 
ceramic plate, a second semicircular 
ceramic plate and a resistor wire winding. The high-power high-stability resistor of the invention is advantaged by that 1, in adoption of the round heat 
radiation holes arranged on the strip-shaped plate, the 
heat energy generated in working can be radiated timely, the precise and stable control of the resistor is ensured; 2, the semicircular 
ceramic plates have good insulation performance, therefore, mutual interferences among the resistance wires are eliminated; 3, the resistor can be used flexibly through matching; the use is safe and reliable; and the resistor is featured by simple structure, low production cost and easy popularization.