The invention discloses a water-based environment-friendly scaling powder which is formed by mixing the following raw materials such as an organic acid activating agent, an organic amine activating agent, a surface active agent, an annexing agent and deionized water. The organic acid activating agent has the enough chemical activity, and can be volatilized at lead-free soldering temperature, and no residue exists after soldering. The organic amine activating agent can improve the activity of the scaling powder, and can also play a role of a corrosion inhibitor. The surface active agent is the non-ionic active agent, and can reduce surface tension of solvent water, improve wetting power and improve the performance of the scaling powder. In addition, a foaming agent, a flatting agent, a brightening agent and other annexing agents can be added. The water-based environment-friendly scaling powder has the advantages that the scaling powder does not contain halogen compounds, is environmentally friendly, and can significantly improve residual insulation resistance formed after soldering, promote wetting, and improve the soldering-aid performance of the scaling powder, residual quantity formed after soldering is low, no cleaning process is needed, the scalding powder is based on water and is not prone to combustion, and production, conveying, storage and using safety are good.