An apparatus for estimating cardiovascular information, the apparatus comprising: a memory storing instructions; and a processor configured to execute the instructions to: obtain a pulse wave signal (100; 410) of an object, wherein the pulse wave signal being formed by a superposition of a propagation wave component and a plurality of reflection wave components; determine an area under the pulse wave signal and above a reference point on the pulse wave signal; determine a secondary differential signal of the pulse wave signal; analyze the secondary differential signal to: determine a local minimum point in a predetermined interval of the secondary differential signal, and determine a time of the local minimum point to be the time of a maximum point of the propagation wave component; determine a point of the pulse wave signal, which corresponds to the time of the local minimum point; determine an area of the propagation wave component included in the determined area of the pulse wave signal based on the determined point of the pulse wave signal and the reference point; remove the determined area of the propagation wave component from the determined area of the pulse wave signal; and estimate cardiovascular information of the object based on the determined area of the pulse wave signal from which the determined area of the the propagation wave component is removed. a memory storing instructions; and a processor configured to execute the instructions to: obtain a pulse wave signal (100; 410) of an object, wherein the pulse wave signal being formed by a superposition of a propagation wave component and a plurality of reflection wave components; determine an area under the pulse wave signal and above a reference point on the pulse wave signal; determine a secondary differential signal of the pulse wave signal; analyze the secondary differential signal to: determine a local minimum point in a predetermined interval of the secondary differential signal, and determine a time of the local minimum point to be the time of a maximum point of the propagation wave component; determine a point of the pulse wave signal, which corresponds to the time of the local minimum point; determine an area of the propagation wave component included in the determined area of the pulse wave signal based on the determined point of the pulse wave signal and the reference point; remove the determined area of the propagation wave component from the determined area of the pulse wave signal; and estimate cardiovascular information of the object based on the determined area of the pulse wave signal from which the determined area of the the propagation wave component is removed. obtain a pulse wave signal (100; 410) of an object, wherein the pulse wave signal being formed by a superposition of a propagation wave component and a plurality of reflection wave components; determine an area under the pulse wave signal and above a reference point on the pulse wave signal; determine a secondary differential signal of the pulse wave signal; analyze the secondary differential signal to: determine a local minimum point in a predetermined interval of the secondary differential signal, and determine a time of the local minimum point to be the time of a maximum point of the propagation wave component; determine a local minimum point in a predetermined interval of the secondary differential signal, and determine a time of the local minimum point to be the time of a maximum point of the propagation wave component; determine a point of the pulse wave signal, which corresponds to the time of the local minimum point; determine an area of the propagation wave component included in the determined area of the pulse wave signal based on the determined point of the pulse wave signal and the reference point; remove the determined area of the propagation wave component from the determined area of the pulse wave signal; and estimate cardiovascular information of the object based on the determined area of the pulse wave signal from which the determined area of the the propagation wave component is removed.