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Stripping combined with struvite precipitation (MAP) was used to treat the liquid digestate. The results showed that the best process parameters for stripping of the digestate from mesophilic digestion were as follows: the pH value was 10, stripping time was 8 h, gas-liquid ratio was 2 400, and filler was added. The removal rate of ammonia in the digestate was about 90%. The pH value of the digestate after stripping was about 9.2 and it was suitable for MAP precipitation method. The pH value regulation was not necessary, so it can save the cost of dosage. The removal rate of ammonia nitrogen and total phosphorus were 95% and 80%, respectively, after MAP precipitation treatment. The removal rates of COD and SS were 40% and 32%, respectively. The pH value of the effluent after MAP precipitation was about 8.3, which can meet the requirements of biochemical treatment. Meanwhile, C/N ratio of the effluent was greatly improved, which was increased from 0.7 to 10, and it was conducive to further treatment of the follow-up biochemical system. The process not only makes the digestate be processed, but also can recover the nutrients.