The burn characteristics are examined of an inertially confined advanced fuel pellet ignited by D-T burn, i.e. a D-T ignitor/D-D fuel and a D-T ignitor/D-3He fuel pellet. With the help of numerical simulations of a bare target model, conditions are derived for the pellet compression needed in an advanced fuel fusion reactor. It is found that a D-T/D-D pellet having a total ρR value of ∼ 13 g·cm−2 and an ignitor with a ρR of ∼ 5 g·cm−2 is required for a reactor operating without tritium breeding blanket. A scaling chart of the fuel burnup and the internal tritium breeding ratio is given, and a condition to be imposed on the ignitor for efficient burn is discussed.