NOVELTY - A conducting polymer trimmed carbon-supported cobalt hydroxide composite catalyst is prepared by dispersing carbon material in water to prepare suspension liquid, adding glacial acetic acid, pyrrole, and hydrogen peroxide, washing product, and drying in vacuum to produce conducting polymer trimmed carbon-supported body; and using the conducting polymer trimmed carbon-supported body to prepare suspension liquid with de-ionized water, adding cobalt acid solution, stirring, heating, adding alkali sodium borohydride solution, and drying.    USE - Method for preparation of conducting polymer trimmed carbon-supported cobalt hydroxide composite catalyst (claimed) for directly coating positive and negative poles of fuel cell.    ADVANTAGE - The method provides catalyst that is inexpensive and capable of improving electrode electricity conductivity, reducing electrode resistance, improving electrode activity, and improving cell output property.    DETAILED DESCRIPTION - Preparation of conducting polymer trimmed carbon-supported cobalt hydroxide composite catalyst, comprises:    (A) dispersing carbon material in water, methyl, or chloroform to prepare suspension liquid with mass ratio of 1:10-30, adding glacial acetic acid or hydrochloric acid for regulating pH at 1-4, stirring for 10-30 minutes at room temperature, adding pyrrole or thiofuran at a mass ratio with the carbon material of 1:4-1:5, stirring for 5-10 minutes, adding 20-50 ml hydrogen peroxide or iron chloride aqueous solution (3-30 wt.%) to polyreaction, stirring for 3-10 hours at room temperature, washing product with mild de-ionized water, and drying in vacuum to produce conducting polymer trimmed carbon-supported body; and    (B) using the conducting polymer trimmed carbon-supported body to prepare suspension liquid with de-ionized water in a 3-necked flask, a mass ratio between the carbon-supported body and de-ionized water being 1:15-1: 25, adding cobalt acid solution, stirring, heating at 70-90 degrees C, a mass ratio between the carbon-supported body and cobalt acid being 1:0.2-1:1, adding 20 ml alkali sodium borohydride solution (0.5 M), stirring for 30-60 minutes to naturally cool, using de-ionized water to wash, filtering, and drying for 6-12 hours in vacuum at 70-90 degrees C to produce the conducting polymer trimmed carbon-supported cobalt hydroxide composite catalyst.