The Chinese Giant Solar Telescope is the next-generation infrared and optical solar telescope of China, with a current design featuring an 8-meter aperture and a 2-meter-wide ring primary mirror structure. This ring-segmented structure effectively addresses the thermal control and high-precision magnetic field measurement challenges. For the Chinese Giant Solar Telescope, the segmented alignment process directly influences the co-focus and co-phase of the primary mirror. During this process, two critical technical issues must still be resolved: first, for the three out-of-plane degrees of freedom (Piston: translation along the Z-axis; Tip and Tilt: rotations about the X-axis and Y-axis) that require active adjustment, the initial mechanical alignment errors on the millimeter scale must be minimized to within the capturing range of subsequent optical measurements (such as the co-phase measurement system and wide-field camera). Second, for the in-plane degrees of freedom (Dx and Dy: translation along the X and Y axes; Clocking: rotation about the Z-axis), which do not undergo active adjustment but still impact the imaging quality of the segmented, the adjustments must be within the permissible error range. To address this, based on the actual needs of segmented alignment for The Chinese Giant Solar Telescope, it presents the corresponding alignment requirements for both out-of-plane degrees of freedom and in-plane degrees of freedom, considering their adjustment characteristics and influencing factors. The alignment requirements for the out-of-plane degrees of freedom are as follows: Tip and Tilt must be adjusted to within ±1', and the piston to within ±100μm. For the in-plane degrees of freedom, the required adjustments are as follows: Dx must be adjusted to ±67μm, Dy to ±25μm, and clocking to ±0.07', in order to meet the image quality requirements of the primary mirror. Currently, three-dimensional coordinate measuring instruments are commonly used for segmented alignment, and the laser tracker has become the most widely used tool due to its high precision, long working distance, and strong real-time measurement capabilities. This paper focuses on exploring the feasibility of using a laser tracker for the initial adjustment of the Chinese Giant Solar Telescope, particularly its applicability in adjusting both in-plane and out-of-plane degrees of freedom. Given the ring primary mirror structure of the Chinese Giant Solar Telescope, a measurement scheme based on the laser tracker is proposed: Reflectors are placed on surfaces other than the optical surface of the segment, such as the side or bottom surfaces, and the spatial position of the segment is described using its local coordinate system (with the position of the reflectors known relative to the segmented local coordinate system). The laser tracker is then employed to measure the position of the reflector on the segment. By combining the measurement results from the laser tracker with the position of the fixed points relative to the local coordinate system, a least-squares fitting method is used to calculate the six coordinate transformation relationships between the segment (or between the segment and a specific spatial reference position), which include three rotational degrees of freedom and three translational degrees of freedom. Through these six transformation parameters, the in-plane and out-of-plane degrees of freedom of the segment can be extracted and compensated for via the adjustment mechanism, thereby achieving precise alignment of the segment. During the actual alignment process, the primary factor affecting the alignment precision is the measurement accuracy of the in-plane and out-of-plane degrees of freedom, as the adjustment mechanism provides high precision. Measurement accuracy is influenced by two main factors: first, the measurement errors of the laser tracker, which are related to the working distance (the further the distance, the greater the error); second, systematic errors caused by the installation of fixed point positions, which are related to installation errors and the roughness of the installation surface, leading to systematic biases in the measurement results. To verify the feasibility of the proposed method, preliminary experimental validation was conducted in a ring-segmented experimental system, demonstrating the viability of the out-of-plane degrees of freedom measurement approach. For the Chinese Giant Solar Telescope, the estimated results show that when the working distance of the laser tracker is less than 8 m and the systematic error at the fixed points is less than 10μm, the measurable accuracies are as follows: Tip is ±0.57', tilt is ±0.33', piston is ±64.58μm, Dx is ±56.89μm, Dy is ±52.78μm, and clocking is ±0.57'. These results show that using a laser tracker for adjusting the out-of-plane degrees of freedom can effectively meet the accuracy requirements for integration with the subsequent optical measurement system. However, due to the higher precision required for the in-plane degrees of freedom, especially for Dy and Clocking, it is currently difficult to further improve the alignment precision of these degrees of freedom using only the laser tracker. Therefore, it is necessary to combine other measurement methods to explore alignment solutions with even higher precision. This research provides valuable reference for the alignment work of the Chinese Giant Solar Telescope and offers technical support for the subsequent implementation of co-focus and co-phase, as well as for improving the effectiveness of co-phase control.