The invention embodiment discloses a gene expression quantity displaying method and device; the method comprises the following steps: sending a user inputted gene name to a server so as to obtain gene expression quantity information corresponding to the gene name from the server; using set colors of different transparency to display gene expression quantity information of each tissue corresponding to the gene name through a set expression mode in a pre-stored human body model image. The method and device can solve the problems that an existing gene expression quantity display mode is low in querying efficiency and indirect in display result, thus displaying the gene expression quantity on each organ of a human body model, so users can directly observe the gene expression quantity conditions, thus improving querying efficiency, and improving display effect.