According to embodiment, a medical fluid analysis apparatus includes processing circuitry generating a treatment model in which a device model is placed in a body cavity model, the device model representing a shape of a treatment device to be placed inside a body cavity of a subject, the body cavity model representing a shape of the cavity, performing a fluid analysis on a fluid in the treatment model with a modification of the treatment model, based on characteristics at least including hardness of body cavity tissue in the body cavity model, characteristics at least including hardness of the treatment device in the device model, and fluid characteristics of the fluid inside the body cavity in the body cavity model, and outputting an analysis result obtained by the processing circuitry.
