A wireless communication terminal and a communication system selection method are capable of selecting a communication system having high battery usage efficiency by keeping battery remaining time long and satisfying throughput required by the application depending on scenes. The wireless communication terminal 100 capable of selecting plural communication systems comprises an application information acquisition unit 170 for acquiring a type of used application;an evaluation amount calculation unit 166 for changing a communication system selection criterion in response to the type of application thus acquired and calculating an evaluation amount with respect to time adding predetermined time to communication system switching time; and a system selection unit 167 for comparing the evaluation amounts thus calculated and selecting any one of communication systems. Therefore, it is possible to select/switch to the communication system having high battery usage efficiency among plural systems in response to a real-time requirement of the application.