Abstract: In order to meet the basic need of secondary and micro elements in lichi and orange planting business, and to efficiently utilize the fertilizer, water and labor sources, 4 recipes featured mixed secondary and/or micro elements (including borax, ammonium molybdate, zinc sulfate and calcium nitrate) were compounded for lichi leaf fertilizers. Given the potential chemical disharmony of the compounded solvents, the author further studied chemical content stability and pH variation of the compounded fertilizers upon potential eternal stimuli including UV, heating and sunlight (and CK). The results showed that: (1) borax and ammonium molybdate share mutual stability in compounding, besides, EDTA could be employed as complex stabilizer as Mg² , Mn² and Zn² ions were added in borax substrate; (2) upon different stimuli for 7 days, all samples with initial pH 6, pH 7 and pH 8 would end up with about pH 6.75; (3) under the set condition, stability trend was concluded as B₈O₁₃^2->Mo₂O₇^2->Ca² >Zn² . This study could provide theoretical chemical support for practical lichi leaf fertilizer compounding.