A lid lock device for use with a lid that closes a port of a vehicle body, the lid lock device comprising: a push lifter alternately switched between a projected state and a retracted state whenever pushed by the lid, wherein the push lifter is configured to urge the lid to an open position when switched from the retracted state to the projected state; a lid lock switch configured to be directly or indirectly pushed by an inner surface of the lid to detect that the lid, when located at a closed position, has been pushed from an outer side; a lid sensor that detects whether the lid is open or closed; a lid lock unit (23, 24, 54) controlled to lock the lid when the lid is closed; a verification unit configured to verify an identification code transmitted through radio communication from an electronic key that serves as a portable device; and a control unit configured to control the lid lock unit (23, 24, 54) in accordance with a verification result of the verification unit, a detection result of the lid sensor, and a detection result of the lid lock switch, wherein a detector switching position (Pco) is set so that the detection result of the lid sensor is switched between an open state and a closed state when the lid passes by the detector switching position (Pco); a lock switch switching position (Pls) is set so that the lid lock switch is pushed when the lid reaches the lock switch switching position (Pls); a push lifter switching position (Ppl) is set so that the push lifter is switched from a projected state to a retracted state when the lid passes by the push lifter switching position (Ppl); the detector switching position (Pco), the lock switch switching position (Pls), and the push lifter switching position (Ppl) are sequentially set from an outer side of the vehicle body, or the detector switching position (Pco), the push lifter switching position (Ppl), and the lock switch switching position (Pls) are sequentially set from an outer side of the vehicle body; and under a situation in which the verification result of the verification unit indicates that the identification code has been verified and the detection result of the lid sensor indicates that the lid is closed, the control unit activates the lid lock unit (23, 24, 54) to switch the lid between a locked state and an unlocked state when the lid lock switch detects that the closed lid has been pushed. a push lifter alternately switched between a projected state and a retracted state whenever pushed by the lid, wherein the push lifter is configured to urge the lid to an open position when switched from the retracted state to the projected state; a lid lock switch configured to be directly or indirectly pushed by an inner surface of the lid to detect that the lid, when located at a closed position, has been pushed from an outer side; a lid sensor that detects whether the lid is open or closed; a lid lock unit (23, 24, 54) controlled to lock the lid when the lid is closed; a verification unit configured to verify an identification code transmitted through radio communication from an electronic key that serves as a portable device; and a control unit configured to control the lid lock unit (23, 24, 54) in accordance with a verification result of the verification unit, a detection result of the lid sensor, and a detection result of the lid lock switch, wherein a detector switching position (Pco) is set so that the detection result of the lid sensor is switched between an open state and a closed state when the lid passes by the detector switching position (Pco); a lock switch switching position (Pls) is set so that the lid lock switch is pushed when the lid reaches the lock switch switching position (Pls); a push lifter switching position (Ppl) is set so that the push lifter is switched from a projected state to a retracted state when the lid passes by the push lifter switching position (Ppl); the detector switching position (Pco), the lock switch switching position (Pls), and the push lifter switching position (Ppl) are sequentially set from an outer side of the vehicle body, or the detector switching position (Pco), the push lifter switching position (Ppl), and the lock switch switching position (Pls) are sequentially set from an outer side of the vehicle body; and under a situation in which the verification result of the verification unit indicates that the identification code has been verified and the detection result of the lid sensor indicates that the lid is closed, the control unit activates the lid lock unit (23, 24, 54) to switch the lid between a locked state and an unlocked state when the lid lock switch detects that the closed lid has been pushed.