This church, located on a high plinth, ranks third in significance among the structures in the central part of the monastery and is situated on the southern side of the main square. The church is a single-domed, pillarless structure typical of the 17th century. The walls of the church and the refectory are connected by a unified rhythm of deep semicircular niches, similar to those of the Dormition Cathedral opposite. It is likely that the same masters who built the cathedral constructed this building, as the architecture of the Trinity Church resembles that of the Dormition Cathedral. The smooth walls, the rhythm of the windows and zakomaras, as well as the exquisite ornamentation on the apses, unite these buildings into a single ensemble. The construction of the Trinity Church with the refectory was financed by Saint Hilarion. After 1923, the Trinity Church housed a club for workers of logging offices, and later, for a military unit. Restoration of this architectural monument began in 2006 when a team of installers led by Igor Ivanov from the company 'Spetsstroy-333', which had previously restored a church in Dubrovitsy, arrived at the monastery. At that time, the Trinity Church of the Florishcheva Monastery was in an emergency state, but thanks to the roofing completed in 1995, by 2005 it was in the best condition among the monastery's buildings. The chief architect of the restoration project was Sergey Demidov, a specialist in restoration. By Easter 2006, a liturgy was held in the Trinity Church, and in 2007, it was fully consecrated. Today, the church is completely restored and is the only permanently functioning church of the Florishcheva Monastery, where monastic services are held. The refectory is also used for its intended purpose. The frescoes of the revived church were created by an icon-painting workshop from Nizhny Novgorod, and the fresco program was developed by the abbot and the Nizhny Novgorod bishop. In the narthex of the Trinity Church, there is a church shop.