The chancel is the oldest surviving part of the building, dating from the later twelfth century, when it likely served as a small chapel raised by monks connected to Herrevad Abbey, whose lands once covered much of the surrounding parish. The name Munka-Ljungby is thought to reflect this monastic connection, meaning roughly "the monks' Ljungby".
The church grew in stages over the following centuries. During the later 1400s the building was probably vaulted throughout, and the west tower was added. Two broad transepts were built in 1867–1868, giving the church much of its present form; the medieval chancel became a sacristy, with a new chancel created to its west. A major restoration in 1930–1931, led by county architect Nils A. Blanck, reshaped the porch and chancel and introduced new pews and flooring. In 2015 the eastern sacristy was converted into a small chapel, and part of the north transept became the new sacristy.
The chancel vault carries late medieval wall paintings, attributed to the so-called Helsingør group and dated to around 1475–1500. The same workshop is associated with paintings in St Mary's Church in Helsingør and in Raus church. The vault ribs and arches are decorated with painted foliage, and fragments of figures survive in the vault webs, including a row of apostles in one section; a consecration cross is painted on the north wall. The paintings were uncovered in 1931, partly retouched, and cleaned again in 2016.
Among the church's furnishings is a square sandstone font attributed to the so-called Mörarp group, dating from the second half of the twelfth century. The altarpiece is a copy of a Rubens painting, marked with a sun symbol and the Hebrew letters for the name of God. A chancel rug by the noted textile designer Märta Måås-Fjetterström adds a more recent decorative element. The present organ, built in 1958 by Hammarbergs orgelbyggeri of Gothenburg, replaced an 1868 instrument by Jöns Olsson Lundahl of Malmö.