The invention provides a power consumption method on a blade server, comprising two sub-strategies: 1, idle power determination strategy; 2, system fan location determination strategy, wherein: 1, if an idle power is less than a blade rated power, then power-up on the blade is restricted; determining whether the maximum power of a single computing blade is less or equal to the present idle power or not is needed to determine whether a computing blade is allowed to power up or not, if the condition is not satisfied, then the computing blade is not allowed to power up; 2, if a corresponding fan disc array does not exist at the location of the blade requesting power up, then the blade is restricted to power up, i.e., the system fan location determination strategy specifically refers: the blade is allowed to power up if a corresponding fan exists at the location of the blade requesting power up, otherwise the blade is not allowed to power up.