NOVELTY - A to-be-processed electroplating sludge is dewatered, dried, screened to remove large particulate matter and sand, sieved sludge is collected, provided in an oven to dry, the sludge is taken out, ground into powder, sieved with 150-220 meshes sieve, and the sieved to-be-processed powder is collected. A domesticated, separated and purified Thiobacillus is enriched and cultured in a culture solution, added to sieved to-be-processed powder, reaction mixed material is obtained, provided in a shaking bed, centrifugal separation is carried out, and electrodeposited.    USE - Method for recycling heavy metal in electroplating sludge (claimed).    DETAILED DESCRIPTION - A to-be-processed electroplating sludge is dewatered, dried, screened by sieve to remove large particulate matter and sand, sieved sludge is collected, provided in an oven to dry to constant weight, the sludge is taken out, ground into powder, sieved with 150-220 meshes sieve, and the sieved to-be-processed powder is collected. A domesticated, separated and purified Thiobacillus is enriched and cultured in a culture solution. When the culture solution is 9K culture solution having pH of 1-2.2, the pH value of enriched culture solution is detected as 1-2.2, centrifuged, the mixed material with pH value of 1-2.2 is separated, Acidithiobacillus ferrooxidans is precipitated at lower layer of centrifugal tube, and collected. When the culture solution is Waksman culture solution, the pH value of the enriched culture solution is detected as 2-2.5, centrifuged, the mixed material with pH value of 2-2.5 is separated, Acidithiobacillus thiooxidans is precipitated at lower layer of the centrifugal tube. The obtained products and obtained electroplating sludge are added into the culture solution, and a reaction mixed material is obtained with electroplating sludge concentration of 20-40 g/L, and mass of Thiobacillus of 5-15% of culturing solution. The reaction mixed material is provided in a shaking bed at 26-30 degrees C with a speed of 120-200 rpm, reacted, the pH value of mixed material is tested for each day, the copper-containing electroplating sludge or nickel-containing electroplating sludge is processed by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans sequentially, the pH value of the mixed material is reduced to 1.5-1.7, the reaction is stopped, centrifugal separation toward the mixed material after the reaction is carried out, extracted, and upper layer of copper-containing lixivium or nickel-containing lixivium is collected. Divalent iron ion and divalent calcium ion are removed from obtained lixivium, and purified lixivium is obtained. The copper-containing lixivium is shifted to an electrolytic cell for conducting electrodeposition, using titanium plate as anode, copper plate as cathode, and recycled to obtain elementary substance copper so as to finish the recycling of electroplating sludge. A nickel extracting agent is used to extract nickel from the lixivium, and nickel extraction solution and copper-containing solution are respectively obtained. Sulfuric acid is used to extract nickel form the nickel extraction solution, shifted to the electrolytic cell using titanium plate as anode and nickel plate as cathode, electrodeposited, and recycled, to obtain elemental nickel. The copper-containing solution is shifted into the electrolytic bath using the titanium plate as anode and copper plate as cathode, electrodeposited, and recycled, to obtain elemental copper so as to finish the recycling of electroplating sludge. The electroplating sludge is copper-containing electroplating sludge with copper content of more than 5 wt.%, or nickel-containing electroplating sludge with nickel content of more than 5 wt.%, or copper and nickel-containing electroplating sludge with copper and nickel content of more than 5 wt.%. The tThiobacillus is Acidithiobacillus ferrooxidans or Acidithiobacillus thiooxidans. The culture solution is 9K culture solution having pH of 1-2.2. When recycling the copper in the copper-containing electroplating sludge, Thiobacillus is Acidithiobacillus ferrooxidans and the culture solution is 9K culture solution. When recycling the nickel in the nickel-containing electroplating sludge, Thiobacillus isAcidithiobacillus thiooxidans and the culture solution is Waksman culture solution. When recycling the copper and nickel in copper and nickel-containing electroplating sludge, Thiobacillus is Acidithiobacillus ferrooxidans and the culture solution is 9K culture solution.