Electronic device and heat dissipation method for electronic device

The invention discloses a heat dissipation method for an electronic device. The method includes the following steps: sensing the temperature of an electronic component through a temperature sensor; determining if the temperature of the electronic component is greater than a temperature threshold value or not; and determining a revolving speed class corresponding to a basic revolving speed if the temperature of the electronic component is greater than the temperature threshold value, and intermittently increasing the basic revolving speed in the revolving speed class. The method can perform heat dissipation on a system in an environment with low noise. 本发明公开了种电子装置的散热方法，包括：利用温度传感器，感测电子组件的温度；判断该电子组件的温度是否大于温度门坎；以及当感测到该电子组件的温度大于温度门坎时，决定对应基础转速的转速阶层，并且于该转速阶层中，间歇性地对该基础转速进行增速。因此可在低噪音的环境下对系统进行有散热。