The invention discloses a coprecipitation preparation method for a calcium barium zirconate titanate leadless piezoelectric ceramic material. The method comprises the following steps: using barium acetate, calcium acetate, zirconium nitrate and titanium tetrachloride as raw materials, using sodium hydroxide or potassium hydroxide as a precipitator, firstly preparing calcium barium zirconate titanate precursor powder with high purity, uniform particles and relatively high activity, and then carrying out presintering, pelleting, tabletting, glue arrangement and sintering on the precursor to obtain the calcium barium zirconate titanate leadless piezoelectric ceramic material. Presintered powder of the ceramic material is prepared by adopting a coprecipitation method, the technology is simple and low in cost, no impurity is unlikely to introduce in the whole process, the prepared presintered powder is high in purity, uniform in dispersion, uniform in shape and relatively high in activity, the sintering temperature is reduced, and meanwhile the sintering temperature of the ceramic material can also be reduced, so that the problem that a traditional solid-phase method is non-uniform in mechanical mixing, unlikely to introduce impurities and high in synthesis temperature is solved.