Abstract
Objective It discusses and researches how to better develop the use function of toothbrush, adds practical function tip replaced periodically. Based on the characteristics of the use of toothbrush and the user psychological needs, it studies the toothbrush appearance design again, perfects the effect of toothbrush. Method It researches the reference factors in the design of toothbrush, investigates and analysis the existing toothbrush market, based on the man-machine engineering theory, analysis the form, the material, and the operation of toothbrush, establishes the research direction. Result It optimizes and innovative designs the toothbrush from the form, the material and the prompt replacement function, gives the design scheme, provides the reference for the research of toothbrush product design.