The invention relates to an antenna and an application thereof. The antenna is an asymmetric microstrip antenna. The antenna comprises a PCB (printed circuit board). A first vibrating arm unit is arranged on the PCB. A first groove is formed in one end of the first vibration arm unit. A circular arc-shaped recess is formed in the bottom of the first groove. A plurality of trapezoid radiation armsare arranged on the upper side of the first vibration arm unit. A plurality of triangular radiation arms are arranged on the lower side of the first vibration arm unit. A second groove is formed in the other end of the first vibration arm unit. The second groove extends upwards and downwards to form a plurality of third grooves. According to the invention, the application of the antenna in a biological cell sap test box can achieve the basic function of the biological cell sap test box. Moreover, CCD data can be transmitted to the outside at any time. The great convenience is brought to the research of researchers.