The title water-based phenolic resin for rock-wool adhesive was prepared by a process of theoretical analysis and experimental summary.The influence of aldehyde/phenol molar ratio,catalyst type,catalyst dosage,reaction time,modifier,curing agent and other factors on the phenolic resin were investigated.The results showed that certain organic amine compound and sodium hydroxide were used as synthesis catalyst,and under suitable reaction conditions,a water-based phenolic resin with good water solubility,high effective solid content,and low free phenol/aldehyde content was prepared.