In order to improve the quality and safety of compost， different additives are used to promote nitrogen fixation and heavy metal passivation.The aerobic compost was conducted with chicken manure as the main raw material in barrel， the effects of biochar(BC)， polyaspatric acid(PA)， mineral solution(TG)， and fermentation broth of fruit waste(FW) on the contents and forms of nitrogen and heavy metals were investigated.The results show that the “concentration effect” of nitrogen and Cu， Zn and Cr in raw material of compost has been promoted with varying degrees by aerobic compost， but there are differences in the passivation effect of different heavy metals.The transformation of Cu is promoted from other fraction to reducible fraction by 11.42% significantly (P<0.05)， while the chemical form of Zn changes from residual fraction and oxidizable fraction to reducible fraction by 10.21% totally (P<0.05) and the reducible fraction of Cd converts to acid soluble fraction by 2.52% (P<0.05).The effect of nitrogen retention and heavy metal passivation are promoted by different additives during aerobic compost.The increment of total nitrogen content in PA treatment is 3.91 times higher than the CK treatment by the chelating function of group and the promotion of humification of PA (P<0.05)， and the BC， TG and FW treatment also show an positive effect on the retention of nitrogen (P>0.05).The insufficiency of FW amount during aerobic compost could be the reason of its inconspicuous effect in nitrogen retention.Comparing with other treatment， the PA and BC treatments show much better effect on the heavy metals passivation， furthermore， the residual fraction proportion of Cu and Cd in compost could be increased by 0.98%， 4.87% separately by the addition of PA (P<0.05).In addition， the passivation effect of four additives on heavy metals probably have relation with the promotion of humification.Not only does the PA perform better on the nitrogen retention and heavy metals passivation， but also it can be degraded completely.In conclusion， PA is a green and safe compost additive.