Climate change will often lead to the fluctuation of insect populations,because insect is poikilothermic animals.Cold hardiness becomes a crucial strategy of insects.It largely determines the distribution,abundance and developmental rates of insect population.Here we summarize the literature about insect cold hardiness in order to make others convenient to know this field.\;The supercooling point(SCP)is perhaps the most common index of invertebrate cold hardiness and is often the first measurement to be mad...