In the pre telescope period (before AD 1600), 349 regressions of bright comets have been recorded in Standard Histories of China. The comet is extended celestial body which can be seen by the naked-eye only when it is brighter than 3 magnitude. Preliminary analyses shown that the records in China made up 70$\%$ of the total number of bright comet returns. In the pre Han period (before 206 BC) there are 23 records in Chinese literatures. Such as in the year of Chou conquest of Shang and The Spring and Autumn period (722-481 BC). Among them 21 records were recorded in Standard Histories, they are undoubted. Oracle bone inscriptions had been cut in 14-11 century BC of Yin Ruins are unearthed relics. Events were recorded by live people at that time. Among those records there were characters of ``Hui", which were ``comet" in Chinese. But just big stars and new stars in oracle inscriptions should be records of comets. 29 returns of Halley's comets in 240 BC to AD 1911 had been entirely recorded in Chinese literatures. Out of which 25 returns had been recorded before AD 1607. Data obtained in three positions or more in observations can be used to determine the initial orbit of the comets. Except Halley's comet, before AD 1600 there were 49 records of returns with more than three positions in Chinese recording. But some of them only have simple records, positions are uncertain. So about half of these records may be used for computing the initial orbits. Most records of comets conserved in the history of China are limited to characters. To describe patterns for comets are only confined to two literatures: (1) ``Tian Wen Da Cheng Gwan Kui Ji Tao" (A comprehensive literature on astrology) in early Qing Dynasty, 17 century. (2) ``Silk manuscript " unearthed in 1973 from the Han Tomb at Mawangdui. The text of which was completed in about 3 century BC. Comets were classified by patterns of their tails into ``hui", ``bei" and ``chang" in ancient China. ``Bei" were included in the category without tails, ``hui" were the one with short and wide tails, and the third one have thin and long tails, which look like the long and pen-like stars. There are 29 comet figures in ``Silk manuscript". Except No.29, the length of the comet tail is 2-3 times as much as its width. In ``Silk manuscript" the author only lay particular emphasis on category comets ``hui" among three above-mentioned categories. All comets in figures don't point at any essential stars. In substance, the figures are drawings based on patterns of observations and talks, and passed through summation over years. Out of 29 comet figures 4 of them have small circles in the cometary heads. They showed cometary nuclei. The names of 29 comet figures in ``Silk manuscript" may be divided into two types. One of them is tools. The other one is plant. In addition, some more pieces in ``Oracle bone inscription collectanea" with the character