The present invention provides a processing unit of dyestuff, pesticide and waste. The invention relates to an equipment of treating, separating and recovery pesticide and dyestuff by nanofiltration combined process. The unit is composed of linked water inlet, a water storage tank, a supercharge pump, a carbon filter, a microstrainer or millipore filter, a water outlet in orders, a linked high pressure pump, a check valve, a filter are set between water outlets in orders, a recovery outlet is set on the filter. Waste after being treated is processed with normal biological treatment, suitable for engineering application, the technology is not only a new clean producing technology of the dyestuff, pesticide production, but also a creation of the dyestuff, pesticide waste treating process, the technology has a high intensification, lower occupation, high automation degree, convenient control management, wide engineering application.