It is well known that the volume of paste in halftones should be precisely controlled. In this work, a new method is proposed to calculate the volume of paste which includes halftone thickness and emulsion thickness. Moreover, the adhesion coefficients K₁ and K₂ in this new method can also be deduced from the experiment. In contrast with the conventional ideal method, the new method has more significant advantages. We find that the rheology has no influence on the adhesion coefficient in this new method. The results indicate that the new method can be used to calculate the volume of paste well when the emulsion thickness is below 20 μm. Therefore this new method is helpful in improving the production efficiency in the solar cell industry.