This document stipulates the model and method for evaluating the quality of the software product under test based on the crowdsourcing test results for a single crowdtesting task in crowdsourcing testing. The intended users and usage scenarios of this document include: a) The contracting party, when 1) expects to understand the quality of the software product under test; b) The contracting party, when 1) expects to improve the testing process and quality; c) Third-party assessment Organization; d) Agency that supervises crowdsourcing testing activities.