A hybrid vehicle comprising: an internal combustion engine; a vehicle driving device configured to generate a driving force for the hybrid vehicle by receiving electric power and generating electric power with power of the internal combustion engine; a secondary battery configured to input and output electric power to and from the vehicle driving device; a current sensor configured to detect a current input to and output from the secondary battery; and a control device configured to control charging and discharging of the secondary battery and configured to calculate an evaluation value (∑D) showing a degree of deterioration of the secondary battery attributable to a salt concentration bias of the secondary battery resulting from the charging and discharging by using a value detected by the current sensor, the evaluation value ∑D) being calculated by integrating damage values (D) showing degrees of high-rate deterioration occurring in the secondary battery in a predetermined cycle of time (Δt), wherein the control device is further configured to execute a forced charging control by using the internal combustion engine and the vehicle driving device in a case where a remaining capacity of the secondary battery is equal to or less than a first predetermined value, the forced charging control being to forcibly charge the secondary battery until the remaining capacity rises to a second predetermined amount exceeding the first predetermined amount, and wherein stopping of the internal combustion engine is prohibited during the execution of the forced charging control, characterized in that an absolute value of the evaluation value (∑D) increases with a progress of the deterioration of the secondary battery, and the control device is configured to execute forced charging with a first electric power having a first absolute value as electric power for charging the secondary battery when the absolute value of the evaluation value (∑D) is equal to or lower than a first threshold, wherein the first threshold is set to a value in a range that does not reach a value showing a deterioration attributable to excessive charging, and configured to execute forced charging with a second electric power having a second absolute value being lower than that of the first electric power as the electric power for charging the secondary battery when the absolute value of the evaluation value (∑D) is higher than the first threshold in a case where the forced charging control is executed while the hybrid vehicle is stopped and in a case where the evaluation value (∑D) shows the degree of the deterioration of the secondary battery attributable to excessive charging. an internal combustion engine; a vehicle driving device configured to generate a driving force for the hybrid vehicle by receiving electric power and generating electric power with power of the internal combustion engine; a secondary battery configured to input and output electric power to and from the vehicle driving device; a current sensor configured to detect a current input to and output from the secondary battery; and a control device configured to control charging and discharging of the secondary battery and configured to calculate an evaluation value (∑D) showing a degree of deterioration of the secondary battery attributable to a salt concentration bias of the secondary battery resulting from the charging and discharging by using a value detected by the current sensor, the evaluation value ∑D) being calculated by integrating damage values (D) showing degrees of high-rate deterioration occurring in the secondary battery in a predetermined cycle of time (Δt),