The uniform temperature information obtained by freezing temperature measurement of fluid inclusions trapped during the growth of halite crystals has a good correlation with the ancient water temperature. In some areas, when the maximum uniform temperature of inclusions is used to evaluate paleoclimate, the temperature data conflicts with the climatic characteristics deciphered from palynological data. The sedimentary characteristics of different crystal forms of halite and the geological implications of the measured temperature in the crystal inclusions need to be further explored. Based on the analysis of classical temperature measurement data, the author observed the formation and growth process of funnel crystals and herringbone crystals in a room temperature evaporation experiment, and analyzed the relationship between uniform temperature, air temperature, and water temperature in different temperature ranges. Combined with the meteorological records, the limitations of the maximum uniform temperature when evaluating climate are analyzed. It is believed that the funnel crystal nucleus is formed on the surface of brine, and the inclusions temperature is affected by both temperature and air pressure. The funnel crystal grows around the nucleus at the bottom of brine, and the temperature of the outer inclusions of the funnel crystal corresponds to the bottom temperature. After sinking into water, the funnel crystal grows slowly and the maximum temperature of the inclusions may represent the annual maximum temperature. This will erroneously indicate that the climate is too hot. The herringbone crystal is the bridge between multiple funnel crystals, most of which are formed at the end of brine evaporation. The temperature of the inclusions in the herringbone striation is affected by both air temperature and the surface temperature. The main reason for the high maximum temperature of inclusions is that the surface temperature is much higher than the air temperature.