The influence of slag powder and quicklime powder on strength of three kinds of fly ash binding materials was investigated and production of related product was carried out,test of properties was conducted.The results show that mixing proper amount of slag powder into fly ash binding materials can greatly improve the flexural strength of the materials,which solves the problem of low flexural strength of fly ash products with high use level of fly ash.And the further research analysis indicates that ignition loss of fly ash is the main factor which affects the strength of fly ash products.