NOVELTY - A double-component liquid silica gel comprises a sizing material (M1) containing components (A) and a sizing material (M2) containing component (B). The sizing material (M1) contains vinyl-containing silicon resin containing M and Q chain sections, vinyl silicone oil containing M and D chain sections, and platinum complex catalyst. The sizing material (M2) contains vinyl-containing silicon resin containing the M and Q chain sections, vinyl silicone oil, hydroxyl-containing silicon oil, epoxy-containing tackifier and addition reaction inhibiting agent.    USE - Double-component liquid silica gel is used for packaging solar battery sheet (claimed).    ADVANTAGE - The double-component liquid silica gel has reduced viscosity. The component containing the double-component liquid silica gel has high mechanical strength and light transmitting rate, and favorable bonding property with respect to fluorine-containing rear panel, solar battery sheet and photovoltaic glass.    DETAILED DESCRIPTION - A double-component liquid silica gel comprises a sizing material (M1) containing components (A) and a sizing material (M2) containing component (B). The sizing material (M1) contains 50-70 pts. wt. vinyl-containing silicon resin containing M and Q chain sections, 20-40 pts. wt. vinyl silicone oil containing M and D chain sections, and 0.1-1 pt. wt. platinum complex catalyst. The sizing material (M2) contains 50-70 pts. wt. vinyl-containing silicon resin containing the M and Q chain sections, 20-40 pts. wt. vinyl silicone oil containing the M and D chain sections, 1-10 pts. wt. hydroxyl-containing silicon oil containing the M and D chain sections, 1-2 pts. wt. epoxy-containing tackifier and 0.05-0.4 pt. wt. addition reaction inhibiting agent. INDEPENDENT CLAIMS are included for the following:    (1) preparation of double-component liquid silica gel, which involves preparing vinyl-containing silicon resin by adding silicon-containing compounds of formula: Si(OR2)R1R2, R3SiOSiR32R1 and R3R22SiOSiR22R3 in water as polar solvent, stirring, raising temperature to 70-90 degrees C, at same time, adding 2-4 mole strong acid, reacting, adding 20-50 mol deionized water for hydrolysis and condensation reaction, controlling reaction temperature at 70-90 degrees C, reacting for 2-4 hours, cooling, washing obtained product using water, adding sodium bicarbonate and silicon compound ((CH3)6Si2N), maintaining pH of 7, decompressing, distilling water and solvent to obtain vinyl-containing silicon resin, preparing vinyl silicone oil by adding silicon compounds of formulae: (R2R3SiO)4, (R1R2SiO)4 and R1R2R3SiOSiR3R2R1 and basic catalyst in weight ratio of 1000:20:12:1, stirring, raising temperature, reacting, decomposition catalyst and vacuum-removing to obtain vinyl silicone oil, preparing epoxy-containing tackifier by adding siloxane compounds of formulae: (H4R24SiO)3-6 and CH2CHSiCH2CH2CH2OCH2(CHCH2O), and hydrated platinum compound (H2Pt6.6H2O) in weight ratio 100:20:0.5, then adding obtained material and non-polar solvent in volume ratio of 1:2-5, stirring, raising temperature, reacting, decompressing, distilling low-molecular component and non-polar solvent to obtain epoxy-containing tackifier, preparing hydroxyl-containing silicon oil by adding silicon compounds of formulae: (R2R3SiO)4, (R5R2SiO)4 and R2R3R5SiOSiR5R3R2 in weight ratio of 50:50:3, reacting, raising temperature, vacuum-decompressing and distilling low-molecular component to obtain hydroxyl-containing silicon oil, preparing platinum complex catalyst by adding hydrated platinum compound (H2Pt6.6H2O), siloxane of formula: R1R2R3SiOSiR3R2R1 (II) and absolute ethyl alcohol in three-mouth bottle, drying under nitrogen protection, refluxing for 2 hours, filtering, distilling solvent and unreacted ethanol, decompressing, adding vinyl-terminated polydimethylsiloxane oil as diluent and platinum complex of formula: (R1R2R3SiO0.5)2Pt, taking addition reaction inhibiting agent, and adding component (A) and component (B); and    (2) usage method of double-component liquid silica gel for packaging solar battery sheet, which involves removing air bubble in double-component liquid silica gel under vacuum, then providing on solar back plate, solar battery plate and photovoltaic glass, and baking at 100 degrees C for 10 minutes, to obtain silicon resin elastomer.    R1=Vi or alkenyl;    R2,R3=Me, Et, Pr or Bu;    R4=-CH2CH2SiCH2CH2CH2OCH2(CHCH2O);and    R5=group which is capable of reacting with H.