由于时间与精力有限等原因，大熊猫（Ailuropoda melanoleuca）会对双胞胎幼崽进行选择，体重可以评估动物生长发育和健康状况，是大熊猫母兽选择时的一项重要指标。大熊猫幼崽叫声也能体现其状态和健康状况。为探究大熊猫幼崽叫声参数与体重之间的联系，本研究以8对16只大熊猫双胞胎幼崽为研究对象。首先对所有叫声参数与大熊猫出生体重进行相关性的分析，筛选出与体重具有显著性相关的参数，对于这些参数再进行双胞胎个体间的差异性分析，最后根据筛选出的参数验证其是否能进行体重的判断。分析发现吱吱叫的T_end、F_{0 start}、Peak ampl和Q25，以及尖叫叫声类型下的Peak ampl与体重之间存在显著的相关性（P<0.05），且在双胞胎个体间也显现出显著性的差异（P<0.05），其中吱吱叫的T_end更能反映出体重的大小，吱吱叫的T_end越大体重就越大。结果表明吱吱叫声的T_end可以判断大熊猫幼崽的体重。本研究结果为圈养大熊猫的繁殖提供了理论依据。

Due to limited time and energy, giant pandas (Ailuropoda melanoleuca) selectively choose their twin neonates based on weight, which can be evaluated as an important indicator of animal growth, development, and health status. The vocalizations of giant panda neonates can also reflect their status and health conditions. In order to investigate the correlation between the vocal parameters of giant panda neonates and their weight, this study selected 8 pairs of 16 giant panda twin neonates as the research objects. Firstly, all vocal parameters and birth weight were subjected to correlation analysis, screening out the parameters significantly related to weight, and further conducting the inter-individual differences analysis of the selected parameters between twin neonates, and finally verifying whether these parameters can be used to judge weight. The results showed that the T_end, F_0 start, Peak ampl, and Q₂₅ of the squawk type, as well as the Peak ampl of the scream type, were significantly correlated with weight (P<0.05), and there were significant differences between twin neonates (P<0.05). Among them, the T_end of the squawk type was more reflective of weight, and as T_end increased, so did weight. The study concluded that the T_end of the squawk vocalization can be used to judge the weight of giant panda cubs. The results of this study provide theoretical support for the breeding of captive giant pandas.