In view of the household refrigerator drawer in the use process due to containing goods too much or too low temperature and freezing, thereby making users in the use process very inconvenient. Theory of Inventive Problem Solving is used in the design of separable refrigerator drawer. First, the functional model of the refrigerator drawer is established by functional analysis, and then the ideal solution is obtained by the idealized level analysis. Then the material and field analysis is carried out by the material field model in the TRIZ theory, and the conflict resolution is solved by the conflict matrix of TRIZ. Through the above analysis based on the TRIZ method, the final solution is put forward and the improved design of drawer for household refrigerator is studied.