The invention discloses an 
anode material 
trihalide polymer for 
lithium battery and the preparation method for 
lithium battery. Carrying out oxidative 
polymerization with thiofuran derivatives such as thiofuran, alkoxy thiofuran, 
alkyl thiofuran, hydro sulfo-thiofuran, 3, 4- sulfo thiofuran to produce poly thiofuran, poly alkoxy thiofuran, poly 
alkyl thiofuran, poly hydro sulfo-thiofuran, poly 3, 4- sulfo thiofuran; preparing 
anode with thiofuran 
polymer, 
carbon black and politef, and assembling 
lithium secondary battery by taking (CxF2x+1SO2)2NLi, CxF2x+1SO3Li, (CxF2x+1SO2)(CyF2y+1)NLi as 
electrolyte, employing dioxohexacyclic ring, 
dioxolane and glycol 
dimethyl ether as 
solvent, and taking 
metal lithium slice as negative pole. The 
discharge specific capacity of assembled lithium secondary battery is 400 Ah /  kg to 1200 Ah /  kg, and the 
cycling stability is sound.