A time series data display device includes a display unit that outputs display data regarding the time series data. The display unit includes a general display generation unit that generates general display data for general display of a general tendency of the time series data and a detailed display generation unit that generates detailed display data for detailed display of detailed individual values of the time series data. The general display displays frequency or density of individual data configuring the time series data at each position of the time series data on a rendering plane, with a visual effect in accordance with the frequency or the density.