The invention relates to a method for preparing superfine CaSiO3 conductive powder in a micro-composite mode. The method comprises the steps that alcohol serves as a reaction medium, at the temperature ranging from 10 DEG C to 100 DEG C, soluble calcium salt and orthosilicate ester are added according to the mole ratio of 1:1 so that CaSiO3 superfine powder can be prepared; the use amount of the alcohol is 1 to 10 times that of the soluble calcium salt according the mole ratio; ammonium hydroxide with the mass percent concentration smaller than or equal to 10% is gradually dripped in a silver nitrate solution with the concentration smaller than or equal to 6mol/L, so that a clear and transparent silver ammonia solution is obtained; at the temperature ranging from 10 DEG C to 100 DEG C, a mixed solution is prepared through the silver ammonia solution and an aldehyde solution according to the volume ratio of 1:1 and the CaSiO3 conductive powder is prepared through the mixed solution and the CaSiO3 superfine powder according to the mole ratio of 1:1. The conductive powder is even in particle diameter, small in volume resistivity and good in conductive performance; the technology process is simple and easy to control, pollution does not exist, the product quality is stable, purity is high and cost is low; the conductive powder can be used in conductive filler, conductive adhesives and conductive auxiliaries.