The invention relates to a better-product-consistency high-frequency head assembly with an antenna isolator, and the assembly comprises a high-frequency head unit circuit and the antenna isolator connected with a signal input end of the high-frequency head unit circuit. The high-frequency head unit circuit is disposed in an external shielding cover. The antenna isolator comprises a pair of shielding covers, wherein the opening ends of the shielding covers are opposite to each other so as to form a shielding cavity. The outer side of one shielding cover is provided with a shielding layer connector, and the rear opening of the other shielding cover is connected with the front opening of the external shielding cover. Capacitors employed by the antenna isolator in the assembly are all no-lead capacitors or paster capacitors, so the assembly is small in line loss, can guarantee the high-frequency characteristics of signal transmission, facilitates the implementation of reflow soldering, does not need manual welding, is suitable for batch production, and achieves the effects that the batch production efficiency is higher, the cost is low and the product consistency is better. The shielding covers can employ stamping parts, and the whole product does not need a PCB, does not need an insert raw part and manual welding, and is easy to guarantee the product consistency.