【Objective】To gain a deeper understanding of the flowering and fruiting characteristics of Leucospermum cordifolium, explore the reasons for its low fruiting rate, and promote its seed production, hybrid breeding, flowering period regulation, and new variety cultivation.【Methods】This article uses Leucospermum cordifolium as the main material to study its flowering phenology, floral characteristics, pollen vitality, stigma acceptability, hybridization index, and pollination and fruiting characteristics.【Results】1) The flowering period of Leucospermum cordifolium is generally in late winter, early spring to summer; 2) The most suitable in vitro germination medium for measuring its pollen vitality is 30g/L sucrose+150mg/L boric acid+50mg/L calcium chloride, with a pollen vitality of 67.47%; 3) The receptivity of the stigma gradually increases from day 1 to day 7 of flowering, and is strongest from day 5 to day 7; The estimation results of hybridization index indicate that Leucospermum cordifolium is partially self compatible, cross compatible, and requires pollination; 4) Field observations have shown that its fruiting rate is relatively low in its natural state, but it can spontaneously complete pollination and there is no phenomenon of apomixis; 5) The artificial pollination experiment found that Leucospermum cordifolium had the highest seed setting rate during cross pollination, at 17.14%, while self pollination had the lowest seed setting rate, at 4.94%.【Conclusion】One of the reasons for the low natural fruiting rate of Leucospermum cordifolium is due to the different ripening of its stamens, while the callus in the pistil style and ovary, as well as the abnormal enlargement of the pollen tube tip after pollen germination, are important reasons for its low fruiting rate.