The invention discloses an 
alcohol-free alkaline texturing solution for a mono-
crystalline silicon wafer, a texturing method for the mono-
crystalline silicon wafer, a 
solar cell and a manufacturing method for the 
solar cell. The 
alcohol-free alkaline texturing solution for the mono-
crystalline silicon wafer comprises an alkaline solution and a texturing additive, wherein the texturing additive is an 
alcohol-free additive. According to the alcohol-free alkaline texturing solution, isopropanol which is harmful to human bodies and the environment adopted in the conventional alkaline texturing solution is abandoned; the 
corrosion depth of the surface of a 
silicon wafer can be controlled within the range of 5 to 7.5 mu m easily by performing surface texturing on the mono-crystalline 
silicon wafer obtained by performing linear 
cutting on 
a diamond by only adopting the alcohol-free alkaline texturing solution consisting of the alkaline solution and the alcohol-free additive; meanwhile, the 
corrosion speed is guaranteed; the 
anisotropy of 
corrosion is enhanced; 
pyramid structures on the surface of the 
silicon wafer obtained after the texturing are small and uniform in size, so that the 
reflectivity of the surface of the silicon wafer is reduced by about 1 percent; the light 
absorption capacity of the surface of the silicon wafer is increased; the conversion efficiency of the 
solar cell is improved.