[ABSTRAK
Partai Komunis Jepang merupakan salah satu partai tua di Jepang yang didirikan pada tahun 1922 dan diresmikan oleh pemerintah Jepang pada tahun 1945. Pada awal didirikannya, partai ini lebih cenderung bersifat anarkis dan radikal, tetapi partai ini mulai berubah menjadi partai yang menyenangkan dan melakukan aksi secara damai. Meskipun partai ini berhaluan kiri, Partai Komunis Jepang tetap memiliki pendukung dari berbagai kalangan. Dukungan yang diberikan untuk Partai Komunis Jepang mengalami peningkatan dan juga penurunan, sehingga hal tersebut berakibat pada elektabilitas dan eksistensinya dalam parlemen Jepang. Banyak pro dan kontra terhadap eksistensi partai ini di Jepang. Eksistensi Partai Komunis Jepang sejak tahun 1945 hingga tahun 1955 diliputi oleh aksi-aksinya dalam menentang kebijakan dan tindakan yang dilakukan oleh pemerintah yang menurut partai ini tidak memihak kepada rakyat Jepang. Partai Komunis Jepang tetap konsisten menjadi salah satu partai oposisi yang menyuarakan kritik dan aspirasinya demi kepentingan rakyat Jepang.

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ABSTRACT
Japanese Communist Party is one of the old party in Japan which was established in 1922 and inaugurated by the Japanese government in 1945. At the beginning of establishment, this party is more likely to be an anarchist and radical party, but this party started to turn into a lovable party. Although this is the left-wing party, the Japanese Communist Party still has the support from various circles. The support that given to the Japanese Communist Party has increased and also decreased, so that it results in electabilty and its existence in the Japanese parliament. There is a lot of pros and cons of the existence of this party in Japan. The existence of the Japanese Communist Party from 1945 to 1955 covered by its actions in opposing the policies and actions taken by the government which, according to this party was not in favor of the people of Japan. Japanese Communist Party consistently be one of the opposition parties who voiced criticism and aspirations for the sake of the Japanese people.;Japanese Communist Party is one of the old party in Japan which was established in 1922 and inaugurated by the Japanese government in 1945. At the beginning of establishment, this party is more likely to be an anarchist and radical party, but this party started to turn into a lovable party. Although this is the left-wing party, the Japanese Communist Party still has the support from various circles. The support that given to the Japanese Communist Party has increased and also decreased, so that it results in electabilty and its existence in the Japanese parliament. There is a lot of pros and cons of the existence of this party in Japan. The existence of the Japanese Communist Party from 1945 to 1955 covered by its actions in opposing the policies and actions taken by the government which, according to this party was not in favor of the people of Japan. Japanese Communist Party consistently be one of the opposition parties who voiced criticism and aspirations for the sake of the Japanese people., Japanese Communist Party is one of the old party in Japan which was established in 1922 and inaugurated by the Japanese government in 1945. At the beginning of establishment, this party is more likely to be an anarchist and radical party, but this party started to turn into a lovable party. Although this is the left-wing party, the Japanese Communist Party still has the support from various circles. The support that given to the Japanese Communist Party has increased and also decreased, so that it results in electabilty and its existence in the Japanese parliament. There is a lot of pros and cons of the existence of this party in Japan. The existence of the Japanese Communist Party from 1945 to 1955 covered by its actions in opposing the policies and actions taken by the government which, according to this party was not in favor of the people of Japan. Japanese Communist Party consistently be one of the opposition parties who voiced criticism and aspirations for the sake of the Japanese people.]