Liquid density measurement units to measure liquid density of a very important tool, it is mainly for general liquid density measurement. This article describes Liquid density measurement units with a wheel design and processing technology platform. Design elements include: Liquid density measurement station selection form, Liquid density measurement units with a wheel design of the overall structure, structural design of cylindrical gear, support structure design density meter, tester bottom design, structural design of the roller the use of CAD software to draw two-dimensional drawings and assembly drawings and machine parts diagram, other components design. As the liquid density measurement units with wheel design called for measuring liquid density there to stop the process, by analyzing the means by clamping the bolt to achieve self-locking effect, that is, reliable, economical and effective solution to this problem.Key words: Liquid density measurement units with a wheel; measure sets; liquid density measurement sets; density measurement; density