The present invention discloses a manufacturing method of an Optically Compensated Bend (OCB) liquid crystal panel, which comprises: an arranging step S1 for alternately arranging a plurality of thin-film transistor (TFT) substrates and a plurality of color filter (CF) substrates, the TFT substrates and the CF substrates are coated with optical alignment material; a light irradiating step S2 for using an ultraviolet (UV) light source to irradiate the TFT substrates and the CF substrates so that alignment films of predetermined alignment directions are formed by the optical alignment material on the TFT substrates and the CF substrates; and an attaching step S3 for attaching each of the TFT substrates and an adjacent one of the CF substrates in such a way that an alignment direction of the TFT substrate is the same as that of the corresponding CF substrate and filling an OCB liquid crystal layer therebetween to form a plurality of OCB liquid crystal panels. For the OCB liquid crystal panel of the present invention, the TFT substrates and the CF substrates are optically aligned in a contactless way, the efficiency of each irradiation is high, which is favorable for mass production.