The high timeliness of space-based information support puts forward strict requirements for TT&C support capabilities. Aiming at the problem of rapid evaluation of TT&C support capabilities, an evaluation method based on analytic hierarchy process is proposed. Firstly, according to the matching consistency principle of timing and event logic, the whole evaluation process is divided into five steps: determined the TT&C requirements of actions, collecting evaluation data, setting evaluation index and standard, the analysis of evaluation data, and providing evaluation feedback and advice. Based on the five steps, the evaluation implementation process is determined, the evaluation hierarchy model is designed, and the evaluation method is proposed. Then, according to the principle of independence, the evaluation indexes and standards are determined, and the normalized evaluation result is obtained by metric weight as a result of comprehensive assignment method, and the decision suggestions corresponding to different standards are determined. Finally, an example shows that the method can quickly complete the evaluation of TT&C support capability, provide corresponding disposal suggestions, and provide a basis for space-based information support decision-making.