A continuous process for preparing microcapsules containing water-insoluble active principle, for use in the pharmaceutical and agrochemical field, comprising:(1) preparation in a first reactor under stirring of an aqueous solution containing one or more surfactants,(2) preparation in a second reactor under stirring of a solution comprising at least an active principle immiscible in an aqueous phase and the first component for preparing the polycondensation polymer forming the microcapsule shell,simultaneous feeding to a tubular reactor of a stream of the aqueous solution (1) and of a stream of solution (2), being the ratio stream solution (2)/stream solution (1) comprised between 0.5 and 2.0,streams (1), and (2) being under turbulent flow conditions in the tubular reactor,streams (1) and (2 being continuously fed to the tubular reactor.
